diff --git a/WINGs/wpixmap.c b/WINGs/wpixmap.c
index 272e56ac..5ad311cb 100644
--- a/WINGs/wpixmap.c
+++ b/WINGs/wpixmap.c
@@ -85,6 +85,9 @@ WMPixmap *WMCreatePixmapFromRImage(WMScreen * scrPtr, RImage * image, int thresh
 	WMPixmap *pixPtr;
 	Pixmap pixmap, mask;
 
+	if (image == NULL)
+		return NULL;
+
 	if (!RConvertImageMask(scrPtr->rcontext, image, &pixmap, &mask, threshold)) {
 		return NULL;
 	}
diff --git a/wrlib/scale.c b/wrlib/scale.c
index 0f5952c8..94612333 100644
--- a/wrlib/scale.c
+++ b/wrlib/scale.c
@@ -52,6 +52,9 @@ RImage *RScaleImage(RImage * image, unsigned new_width, unsigned new_height)
 	unsigned char *d;
 	RImage *img;
 
+	if (image == NULL)
+		return NULL;
+
 	if (new_width == image->width && new_height == image->height)
 		return RCloneImage(image);