diff --git a/legacy/elementary/src/lib/elm_icon.c b/legacy/elementary/src/lib/elm_icon.c
index 6fda6de033..8324b93ba5 100644
--- a/legacy/elementary/src/lib/elm_icon.c
+++ b/legacy/elementary/src/lib/elm_icon.c
@@ -1,6 +1,7 @@
 #include <Elementary.h>
 #include "elm_priv.h"
 #include "els_icon.h"
+#include <assert.h>
 
 #ifdef ELM_EFREET
 #define NON_EXISTING (void *)-1
diff --git a/legacy/elementary/src/lib/elm_thumb.c b/legacy/elementary/src/lib/elm_thumb.c
index 01e497e94b..f1e64fc7bb 100644
--- a/legacy/elementary/src/lib/elm_thumb.c
+++ b/legacy/elementary/src/lib/elm_thumb.c
@@ -1,5 +1,6 @@
 #include <Elementary.h>
 #include "elm_priv.h"
+#include <assert.h>
 
 typedef struct _Widget_Data Widget_Data;