diff --git a/httperf/src/conn.c b/httperf/src/conn.c
index a80669a..ff91220 100755
--- a/httperf/src/conn.c
+++ b/httperf/src/conn.c
@@ -37,6 +37,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <generic_types.h>
 #include <object.h>
diff --git a/httperf/src/core.c b/httperf/src/core.c
index 03f9cc0..2b292ef 100755
--- a/httperf/src/core.c
+++ b/httperf/src/core.c
@@ -42,6 +42,7 @@
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <sys/ioctl.h>