diff --git a/Source/include/slikenet/linux_adapter.h b/Source/include/slikenet/linux_adapter.h
index 32cf34141..b8a228f2d 100644
--- a/Source/include/slikenet/linux_adapter.h
+++ b/Source/include/slikenet/linux_adapter.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2016, SLikeSoft UG (haftungsbeschränkt)
+ *  Copyright (c) 2016-2019, SLikeSoft UG (haftungsbeschränkt)
  *
  *  This source code is licensed under the MIT-style license found in the
  *  license.txt file in the root directory of this source tree.
@@ -24,6 +24,7 @@ errno_t mbstowcs_s(size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, con
 int sprintf_s(char *buffer, size_t sizeOfBuffer, const char *format, ...);
 errno_t strcat_s(char *strDestination, size_t numberOfElements, const char *strSource);
 errno_t strcpy_s(char* strDestination, size_t numberOfElements, const char *strSource);
+errno_t strerror_s(char* buffer, size_t numberOfElements, int errnum);
 errno_t strncat_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count);
 errno_t strncpy_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count);
 int vsnprintf_s(char *buffer, size_t sizeOfBuffer, size_t count, const char *format, va_list argptr);
@@ -56,6 +57,11 @@ template<size_t BufferSize> errno_t strcpy_s(char (&strDestination)[BufferSize],
 	return strcpy_s(strDestination, BufferSize, strSource);
 }
 
+template<size_t BufferSize> errno_t strerror_s(char(&buffer)[BufferSize], int errnum)
+{
+	return strerror_s(buffer, BufferSize, errnum);
+}
+
 template<size_t BufferSize> errno_t strncat_s(char(&strDest)[BufferSize], const char *strSource, size_t count)
 {
 	return strncat_s(strDest, BufferSize, strSource, count);
diff --git a/Source/include/slikenet/osx_adapter.h b/Source/include/slikenet/osx_adapter.h
index 7830f9af6..ebaafea2b 100644
--- a/Source/include/slikenet/osx_adapter.h
+++ b/Source/include/slikenet/osx_adapter.h
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2016, SLikeSoft UG (haftungsbeschränkt)
+ *  Copyright (c) 2016-2019, SLikeSoft UG (haftungsbeschränkt)
  *
  *  This source code is licensed under the MIT-style license found in the
  *  license.txt file in the root directory of this source tree.
@@ -24,6 +24,7 @@ errno_t mbstowcs_s(size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, con
 int sprintf_s(char *buffer, size_t sizeOfBuffer, const char *format, ...);
 errno_t strcat_s(char *strDestination, size_t numberOfElements, const char *strSource);
 errno_t strcpy_s(char* strDestination, size_t numberOfElements, const char *strSource);
+errno_t strerror_s(char* buffer, size_t numberOfElements, int errnum);
 errno_t strncat_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count);
 errno_t strncpy_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count);
 int vsnprintf_s(char *buffer, size_t sizeOfBuffer, size_t count, const char *format, va_list argptr);
@@ -56,12 +57,17 @@ template<size_t BufferSize> errno_t strcpy_s(char (&strDestination)[BufferSize],
 	return strcpy_s(strDestination, BufferSize, strSource);
 }
 
-template<size_t BufferSize> errno_t strncat_s(char(&strDest)[BufferSize], const char *strSource, size_t count)
+template<size_t BufferSize> errno_t strerror_s(char(&buffer)[BufferSize], int errnum)
+{
+	return strerror_s(buffer, BufferSize, errnum);
+}
+
+template<size_t BufferSize> errno_t strncat_s(char (&strDest)[BufferSize], const char *strSource, size_t count)
 {
 	return strncat_s(strDest, BufferSize, strSource, count);
 }
 
-template<size_t BufferSize> errno_t strncpy_s(char(&strDest)[BufferSize], const char *strSource, size_t count)
+template<size_t BufferSize> errno_t strncpy_s(char (&strDest)[BufferSize], const char *strSource, size_t count)
 {
 	return strncpy_s(strDest, BufferSize, strSource, count);
 }
diff --git a/Source/src/linux_adapter.cpp b/Source/src/linux_adapter.cpp
index f137137e5..fe25abe96 100644
--- a/Source/src/linux_adapter.cpp
+++ b/Source/src/linux_adapter.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2016-2017, SLikeSoft UG (haftungsbeschränkt)
+ *  Copyright (c) 2016-2019, SLikeSoft UG (haftungsbeschränkt)
  *
  *  This source code is licensed under the MIT-style license found in the
  *  license.txt file in the root directory of this source tree.
@@ -15,7 +15,7 @@
 #include <cerrno>		// for errno
 #include <cstdio>		// for FILE, fopen, vsnprintf
 #include <cstdlib>		// for mbstowcs
-#include <cstring>		// for strcat, strcpy, strncat, strncpy
+#include <cstring>		// for strcat, strcpy, strerror, strncat, strncpy
 #include <cstdarg>		// for va_start, va_end, va_list
 #include <ctime>		// for localtime, time_t
 #include <cwchar>		// for wcscat, wcscpy, wcslen
@@ -171,6 +171,17 @@ errno_t strcpy_s(char* strDestination, size_t numberOfElements, const char *strS
 	return 0;
 }
 
+errno_t strerror_s(char* buffer, size_t numberOfElements, int errnum)
+{
+	// check valid parameters
+	if ((buffer == nullptr) || (numberOfElements == 0)) {
+		return 22; // error: EINVAL
+	}
+
+	const char *errorMessage = strerror(errnum);
+	return strcpy_s(buffer, numberOfElements, errorMessage);
+}
+
 errno_t strncat_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count)
 {
 	// check valid parameters
diff --git a/Source/src/osx_adapter.cpp b/Source/src/osx_adapter.cpp
index d72173024..f3a4a2827 100644
--- a/Source/src/osx_adapter.cpp
+++ b/Source/src/osx_adapter.cpp
@@ -1,5 +1,5 @@
 /*
- *  Copyright (c) 2016-2017, SLikeSoft UG (haftungsbeschränkt)
+ *  Copyright (c) 2016-2019, SLikeSoft UG (haftungsbeschränkt)
  *
  *  This source code is licensed under the MIT-style license found in the
  *  license.txt file in the root directory of this source tree.
@@ -15,7 +15,7 @@
 #include <cerrno>		// for errno
 #include <cstdio>		// for FILE, fopen, vsnprintf
 #include <cstdlib>		// for mbstowcs
-#include <cstring>		// for strcat, strcpy, strncat, strncpy
+#include <cstring>		// for strcat, strcpy, strerror, strncat, strncpy
 #include <cstdarg>		// for va_start, va_end, va_list
 #include <ctime>		// for localtime, time_t
 #include <cwchar>		// for wcscat, wcscpy, wcslen
@@ -171,6 +171,17 @@ errno_t strcpy_s(char* strDestination, size_t numberOfElements, const char *strS
 	return 0;
 }
 
+errno_t strerror_s(char* buffer, size_t numberOfElements, int errnum)
+{
+	// check valid parameters
+	if ((buffer == nullptr) || (numberOfElements == 0)) {
+		return 22; // error: EINVAL
+	}
+
+	const char *errorMessage = strerror(errnum);
+	return strcpy_s(buffer, numberOfElements, errorMessage);
+}
+
 errno_t strncat_s(char *strDest, size_t numberOfElements, const char *strSource, size_t count)
 {
 	// check valid parameters
diff --git a/changelog.txt b/changelog.txt
index 9085afdee..f0ed7bffc 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -111,6 +111,7 @@ Core:
 Building:
   General:
     * fixed compile errors when enabling IPv6 on Linux/OSX (#220)
+    * fixed compile error when enabling OPENSSL on Linux/OSX (#273)
   CrashReporter:
     * fixed compile error when compiling in RAKNET_COMPATIBILITY mode (#223)
   Lobby2:
diff --git a/readme.txt b/readme.txt
index 48ebbc379..d0dcaec74 100644
--- a/readme.txt
+++ b/readme.txt
@@ -1135,7 +1135,7 @@ Lib/prebuild/VS_xxxx/SLikeNet_DLL_[configuration]_[core|ext]_[platform].dll
 to the directory where the C# executable will be built to and rename it to
 SLikeNet.dll.
 On Linux you are required to build a shared library yourself since SLikeNet
-isn't shipped with prebuilds for Linux. Simply follow the steps under 3.7.3.2
+doesn't ship with prebuilds for Linux. Simply follow the steps under 3.7.3.2
 which will take care about building such library and put it into an
 appropriate directory.