diff --git a/daemon/Makefile b/daemon/Makefile
index 9940ba92c..6dceebb32 100644
--- a/daemon/Makefile
+++ b/daemon/Makefile
@@ -4,7 +4,7 @@ with_iptables_option ?= yes
 with_transcoding ?= yes
 
 
-CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes
+CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes -Werror=return-type
 CFLAGS+=	-pthread -fno-strict-aliasing
 CFLAGS+=	-std=c99
 CFLAGS+=	$(shell pkg-config --cflags glib-2.0)
diff --git a/recording-daemon/Makefile b/recording-daemon/Makefile
index 8b47bc1b9..4caabc100 100644
--- a/recording-daemon/Makefile
+++ b/recording-daemon/Makefile
@@ -1,6 +1,6 @@
 TARGET=		rtpengine-recording
 
-CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes
+CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes -Werror=return-type
 CFLAGS+=	-pthread -I. -I../lib/ -I../kernel-module/
 CFLAGS+=	-std=c99 -fno-strict-aliasing
 CFLAGS+=	-D_GNU_SOURCE -D_POSIX_SOURCE -D_POSIX_C_SOURCE
diff --git a/t/Makefile b/t/Makefile
index 4cc4c1976..79e7ea8b5 100644
--- a/t/Makefile
+++ b/t/Makefile
@@ -2,7 +2,7 @@ TARGET=		all-tests
 
 with_transcoding ?= yes
 
-CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes
+CFLAGS?=	-g -Wall -Wextra -Wno-sign-compare -Wno-unused-parameter -Wstrict-prototypes -Werror=return-type
 PRELOAD_CFLAGS := $(CFLAGS)
 CFLAGS+=	-pthread -fno-strict-aliasing
 CFLAGS+=	-std=c99