diff --git a/src/__init__.py b/src/__init__.py
index 4628d73e9..bd66a643e 100644
--- a/src/__init__.py
+++ b/src/__init__.py
@@ -7750,6 +7750,7 @@ def _add_redact_annot(self, quad, text=None, da_str=None, align=0, fill=None, te
                 mupdf.pdf_array_push_real(arr, fcol[i])
             mupdf.pdf_dict_put(mupdf.pdf_annot_obj(annot), PDF_NAME('IC'), arr)
         if text:
+            assert da_str
             mupdf.pdf_dict_puts(
                     mupdf.pdf_annot_obj(annot),
                     "OverlayText",
@@ -16547,7 +16548,10 @@ def __str__(self):
         style.size = ch.m_internal.size
         style.flags = flags
         style.font = JM_font_name(mupdf.FzFont(mupdf.ll_fz_keep_font(ch.m_internal.font)))
-        style.color = ch.m_internal.color
+        if mupdf_version_tuple >= (1, 26):
+            style.color = ch.m_internal.argb
+        else:
+            style.color = ch.m_internal.color
         style.asc = JM_font_ascender(mupdf.FzFont(mupdf.ll_fz_keep_font(ch.m_internal.font)))
         style.desc = JM_font_descender(mupdf.FzFont(mupdf.ll_fz_keep_font(ch.m_internal.font)))
 
@@ -21057,10 +21061,12 @@ def sRGB_to_rgb(srgb: int) -> tuple:
     There is **no error checking** for performance reasons!
 
     Args:
-        srgb: (int) RRGGBB (red, green, blue), each color in range(255).
+        srgb: (int) SSRRGGBB (red, green, blue), each color in range(255).
+        With MuPDF < 1.26, `s` is always 0.
     Returns:
         Tuple (red, green, blue) each item in interval 0 <= item <= 255.
     """
+    srgb &= 0xffffff
     r = srgb >> 16
     g = (srgb - (r << 16)) >> 8
     b = srgb - (r << 16) - (g << 8)
diff --git a/src/extra.i b/src/extra.i
index 0b5b8c6f9..5c1d7910f 100644
--- a/src/extra.i
+++ b/src/extra.i
@@ -3045,7 +3045,7 @@ mupdf::FzRect JM_make_spanlist(
         float size = -1;
         int flags = -1;
         const char *font = "";
-        int color = -1;
+        unsigned int color = -1;
         float asc = 0;
         float desc = 0;
     };
@@ -3064,7 +3064,11 @@ mupdf::FzRect JM_make_spanlist(
         style.size = ch.m_internal->size;
         style.flags = flags;
         style.font = JM_font_name(ch.m_internal->font);
-        style.color = ch.m_internal->color;
+        #if (FZ_VERSION_MAJOR > 1 || (FZ_VERSION_MAJOR == 1 && FZ_VERSION_MINOR >= 26))
+            style.color = ch.m_internal->argb;
+        #else
+            style.color = ch.m_internal->color;
+        #endif
         style.asc = JM_font_ascender(ch.m_internal->font);
         style.desc = JM_font_descender(ch.m_internal->font);
 
diff --git a/tests/resources/test_4047.pdf b/tests/resources/test_4047.pdf
new file mode 100644
index 000000000..b36b753c9
Binary files /dev/null and b/tests/resources/test_4047.pdf differ
diff --git a/tests/test_annots.py b/tests/test_annots.py
index 6c579cc33..ff4f92e12 100644
--- a/tests/test_annots.py
+++ b/tests/test_annots.py
@@ -458,3 +458,17 @@ def test_parent():
             assert str(e) == 'weakly-referenced object no longer exists'
     else:
         assert 0, f'Failed to get expected exception.'
+
+def test_4047():
+    path = os.path.normpath(f'{__file__}/../../tests/resources/test_4047.pdf')
+    with pymupdf.open(path) as document:
+        page = document[0]
+        fontname = page.get_fonts()[0][3]
+        if fontname not in pymupdf.Base14_fontnames:
+            fontname = "Courier"
+        hits = page.search_for("|")
+        for rect in hits:
+            page.add_redact_annot(
+                rect, " ", fontname=fontname, align=pymupdf.TEXT_ALIGN_CENTER, fontsize=10
+            )  # Segmentation Fault...
+        page.apply_redactions()
diff --git a/tests/test_general.py b/tests/test_general.py
index 2d87f22c4..c3417601c 100644
--- a/tests/test_general.py
+++ b/tests/test_general.py
@@ -392,11 +392,15 @@ def test_2238():
     rebased = hasattr(pymupdf, 'mupdf')
     if rebased:
         wt = pymupdf.TOOLS.mupdf_warnings()
-        assert wt == (
-                'format error: cannot recognize version marker\n'
-                'trying to repair broken xref\n'
-                'repairing PDF document'
-                ), f'{wt=}'
+        wt_expected = ''
+        if pymupdf.mupdf_version_tuple >= (1, 26):
+            wt_expected += 'garbage bytes before version marker\n'
+            wt_expected += 'syntax error: expected \'obj\' keyword (6 0 ?)\n'
+        else:
+            wt_expected += 'format error: cannot recognize version marker\n'
+        wt_expected += 'trying to repair broken xref\n'
+        wt_expected += 'repairing PDF document'
+        assert wt == wt_expected, f'{wt=}'
     first_page = doc.load_page(0).get_text('text', pymupdf.INFINITE_RECT())
     last_page = doc.load_page(-1).get_text('text', pymupdf.INFINITE_RECT())
 
@@ -1555,7 +1559,10 @@ def test_3905():
     else:
         assert 0
     wt = pymupdf.TOOLS.mupdf_warnings()
-    assert wt == 'format error: cannot recognize version marker\ntrying to repair broken xref\nrepairing PDF document'
+    if pymupdf.mupdf_version_tuple >= (1, 26):
+        assert wt == 'format error: cannot find version marker\ntrying to repair broken xref\nrepairing PDF document'
+    else:
+        assert wt == 'format error: cannot recognize version marker\ntrying to repair broken xref\nrepairing PDF document'
 
 def test_3624():
     path = os.path.normpath(f'{__file__}/../../tests/resources/test_3624.pdf')