Fix #27

src/Prefixer.php

@@ -215,6 +215,8 @@ public function replaceClassname($contents, $originalClassname, $classnamePrefix
 														# potential second namespace declaration.
 				|										# if found, match that much before continuing the search on
 								    		        	# the remainder of the string.
+                namespace\s+[a-zA-Z0-9_\x7f-\xff\\\\]+; # Skip lines just declaring the namespace.
+                |		        	
 				([^a-zA-Z0-9_\x7f-\xff\$])('. $searchClassname . ')([^a-zA-Z0-9_\x7f-\xff])
 				
 			/x'; //                                     # x: ignore whitespace in regex.

tests/Unit/PrefixerTest.php

@@ -1317,5 +1317,4 @@ class NA
 
         $this->assertEquals($contents, $result);
     }
-
 }