diff --git a/skeletalanimation/skeletalanimation.cpp b/skeletalanimation/skeletalanimation.cpp
index de9a1128..f02d889f 100644
--- a/skeletalanimation/skeletalanimation.cpp
+++ b/skeletalanimation/skeletalanimation.cpp
@@ -11,6 +11,7 @@
 #include <string.h>
 #include <assert.h>
 #include <vector>
+#include <map>
 
 #define GLM_FORCE_RADIANS
 #define GLM_FORCE_DEPTH_ZERO_TO_ONE