diff --git a/include/gdisp/image.h b/include/gdisp/image.h
index 8e71437b..49b10d42 100644
--- a/include/gdisp/image.h
+++ b/include/gdisp/image.h
@@ -135,7 +135,7 @@ extern "C" {
 	 *
 	 * @note	Always returns TRUE for a Memory Reader
 	 */
-	bool_t gdispImageSetMemoryReader(gdispImage *img, const char *memimage);
+	bool_t gdispImageSetMemoryReader(gdispImage *img, const void *memimage);
 
 	/**
 	 * @brief	Sets the io fields in the image structure to routines
diff --git a/src/gdisp/image.c b/src/gdisp/image.c
index 616aab11..3da0844d 100644
--- a/src/gdisp/image.c
+++ b/src/gdisp/image.c
@@ -88,10 +88,10 @@ static void ImageMemoryClose(struct gdispImageIO *pio) {
 static const gdispImageIOFunctions ImageMemoryFunctions =
 	{ ImageMemoryRead, ImageMemorySeek, ImageMemoryClose };
 
-bool_t gdispImageSetMemoryReader(gdispImage *img, const char *memimage) {
+bool_t gdispImageSetMemoryReader(gdispImage *img, const void *memimage) {
 	img->io.fns = &ImageMemoryFunctions;
 	img->io.pos = 0;
-	img->io.fd = (void *)memimage;
+	img->io.fd = memimage;
 	return TRUE;
 }