diff --git a/src/r_defs.h b/src/r_defs.h
index d831aff34..0fbe769e3 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -902,7 +902,7 @@ struct softwarepatch_t
 	INT16 height;
 	INT16 leftoffset;     // pixels to the left of origin
 	INT16 topoffset;      // pixels below the origin
-	INT32 columnofs[8];     // only [width] used
+	INT32 columnofs[];     // only [width] used
 	// the [0] is &columnofs[width]
 } ATTRPACK;