diff --git a/casadm/Makefile b/casadm/Makefile
index 750f9c8..36492a0 100644
--- a/casadm/Makefile
+++ b/casadm/Makefile
@@ -77,7 +77,7 @@ CFLAGS    += -O0 -g
 else
 CFLAGS    += -O2 -D_FORTIFY_SOURCE=2
 endif
-CFLAGS    += -Wall -z relro -z now -fstack-protector -fPIC -Wformat -Wformat-security -fno-strict-aliasing
+CFLAGS    += -Wall -Werror -z relro -z now -fstack-protector -fPIC -Wformat -Wformat-security -fno-strict-aliasing
 
 #
 # Flags for linking
diff --git a/casadm/cas_lib.c b/casadm/cas_lib.c
index be33b0a..6086d38 100644
--- a/casadm/cas_lib.c
+++ b/casadm/cas_lib.c
@@ -972,7 +972,7 @@ int start_cache(uint16_t cache_id, unsigned int cache_init,
 	if (!cmd.metadata_mode_optimal)
 		cas_printf(LOG_NOTICE, "Selected metadata mode is not optimal for device %s.\n"
 			"You can improve cache performance by formatting your device\n",
-			cache_device, cache_device);
+			cache_device);
 
 	check_cache_scheduler(cache_device,
 			      cmd.cache_elevator);