diff --git a/sesman/ercp_process.c b/sesman/ercp_process.c
index ea1e9efc..cc273437 100644
--- a/sesman/ercp_process.c
+++ b/sesman/ercp_process.c
@@ -35,6 +35,7 @@
 #include "ercp.h"
 #include "ercp_process.h"
 #include "session_list.h"
+#include "string_calls.h"
 
 /******************************************************************************/
 static int
diff --git a/sesman/sesexec/ercp_server.c b/sesman/sesexec/ercp_server.c
index 5da61fd5..3026173e 100644
--- a/sesman/sesexec/ercp_server.c
+++ b/sesman/sesexec/ercp_server.c
@@ -36,6 +36,7 @@
 #include "os_calls.h"
 #include "session.h"
 #include "sesman_config.h"
+#include "string_calls.h"
 #include "trans.h"
 
 #include "ercp.h"