diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c
index 4825b466..8319d7cf 100644
--- a/libweston/compositor-drm.c
+++ b/libweston/compositor-drm.c
@@ -319,7 +319,7 @@ drm_fb_create_dumb(struct drm_backend *b, unsigned width, unsigned height,
 	ret = -1;
 
 	if (!b->no_addfb2) {
-		uint32_t handles[4], pitches[4], offsets[4];
+		uint32_t handles[4] = { 0 }, pitches[4] = { 0 }, offsets[4] = { 0 };
 
 		handles[0] = fb->handle;
 		pitches[0] = fb->stride;