diff --git a/src/efit/efit.c b/src/efit/efit.c
index cfdf7b4..ef71e37 100644
--- a/src/efit/efit.c
+++ b/src/efit/efit.c
@@ -6,6 +6,7 @@
 
 #include <stdio.h>
 #include <math.h>
+#include <string.h>
 
 #define EFIT_MAIN 1