diff --git a/src/gallium/auxiliary/driver_ddebug/dd_draw.c b/src/gallium/auxiliary/driver_ddebug/dd_draw.c
index 2efab030a5f..36bf5b03da0 100644
--- a/src/gallium/auxiliary/driver_ddebug/dd_draw.c
+++ b/src/gallium/auxiliary/driver_ddebug/dd_draw.c
@@ -40,6 +40,7 @@
 #include "util/os_time.h"
 #include <inttypes.h>
 #include "util/detect.h"
+#include "c99_alloca.h"
 
 void
 dd_get_debug_filename_and_mkdir(char *buf, size_t buflen, bool verbose)