diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 6efebff72..580526836 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,3 +1,9 @@
+January 12, 2008 (Changes by Graf Zahl)
+- Fixed: M_SaveBitmap::prior was too small. It must be 3 bytes per pixel,
+  not 1.
+- Replaced INVGEM** graphics with PNG versions so that they have the
+  correct colors when used on the AltHUD in Strife.
+
 January 11, 2008
 - Added support for 24-bit screenshots, so now accelerated 2D screenshots
   can work.
diff --git a/src/m_png.cpp b/src/m_png.cpp
index 055fe1d7d..65fad7761 100644
--- a/src/m_png.cpp
+++ b/src/m_png.cpp
@@ -759,7 +759,7 @@ DWORD CalcSum(Byte *row, int len)
 //
 //==========================================================================
 
-static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH], int width)
+static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH*3], int width)
 {
 #if 1
 	// As it turns out, it seems no filtering is the best for Doom screenshots,
@@ -894,7 +894,7 @@ static int SelectFilter(Byte row[5][1 + MAXWIDTH*3], Byte prior[MAXWIDTH], int w
 
 bool M_SaveBitmap(const BYTE *from, ESSType color_type, int width, int height, int pitch, FILE *file)
 {
-	Byte prior[MAXWIDTH];
+	Byte prior[MAXWIDTH*3];
 	Byte buffer[PNG_WRITE_SIZE];
 	Byte temprow[5][1 + MAXWIDTH*3];
 	z_stream stream;