diff --git a/tests/Makefile b/tests/Makefile
index 7da119e449..bd7fe3738d 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -9,7 +9,7 @@ WARNINGS = -Werror -Wall -Wextra \
            -Wshadow -Wundef -Wmaybe-uninitialized -Wmissing-prototypes -Wpointer-arith -Wuninitialized \
            -Wunreachable-code -Wreturn-type -Wmultichar -Wformat-security -Wdouble-promotion -Wclobbered -Wdeprecated  \
            -Wempty-body -Wshift-negative-value -Wstack-usage=2048 \
-           -Wtype-limits -Wsizeof-pointer-memaccess -Wno-error=cast-function-type
+           -Wtype-limits -Wsizeof-pointer-memaccess
 
 #-Wno-unused-value -Wno-unused-parameter
 OPTIMIZATION ?= -O3 -g0