diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 0f4f533c69..69531e7bbf 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,8 @@
-July 24, 2009  (Changes by Graf Zahl)
+July 25, 2009  (Changes by Graf Zahl)
+- Fixed: The composer for complex multipatch textures did not clear the palette
+  buffer before filling it.
+
+July 24, 2009  (Changes by Graf Zahl)
 - Fixed: using custom automap backgrounds crashed.
 
 July 22, 2009
diff --git a/src/textures/bitmap.cpp b/src/textures/bitmap.cpp
index b06769b1a1..702b2b5f51 100644
--- a/src/textures/bitmap.cpp
+++ b/src/textures/bitmap.cpp
@@ -523,6 +523,7 @@ void FBitmap::CopyPixelData(int originx, int originy, const BYTE * patch, int sr
 		BYTE *buffer = data + 4*originx + Pitch*originy;
 		PalEntry penew[256];
 
+		memset(penew, 0, sizeof(penew));
 		if (inf && inf->blend)
 		{
 			iCopyColors<cPalEntry, cBGRA, bCopy>((BYTE*)penew, (const BYTE*)palette, 256, 4, inf);