diff --git a/repmgr.c b/repmgr.c
index 47482531..d1ff8f1b 100644
--- a/repmgr.c
+++ b/repmgr.c
@@ -208,7 +208,7 @@ main(int argc, char **argv)
 
 	if (config_file == NULL)
 	{
-		config_file = malloc(10 + sizeof(CONFIG_FILE));
+		config_file = malloc(5 + sizeof(CONFIG_FILE));
 		sprintf(config_file, "./%s", CONFIG_FILE);
 	}
 
diff --git a/repmgrd.c b/repmgrd.c
index 55b00d51..288b31c4 100644
--- a/repmgrd.c
+++ b/repmgrd.c
@@ -118,7 +118,10 @@ main(int argc, char **argv)
 	setup_cancel_handler();
 	
 	if (config_file == NULL)
+	{
+		config_file = malloc(5 + sizeof(CONFIG_FILE));
 		sprintf(config_file, "./%s", CONFIG_FILE);
+	}
 
 	/*
 	 * Read the configuration file: repmgr.conf