--- CMakeLists.txt	2018-06-13 08:20:55.012756800 +0200
+++ CMakeLists.txt	2018-06-13 08:23:34.179228185 +0200
@@ -551,8 +551,8 @@

 IF (UNIX)
   SET( CMAKE_C_FLAGS "-Werror -Wdeclaration-after-statement -Wno-pointer-sign -Wall -Wmissing-prototypes -Wmissing-declarations -Wno-unused ${CMAKE_C_FLAGS}")
-  SET( CMAKE_CXX_FLAGS "-Werror -Wall -Wmissing-declarations -Wno-unused ${CMAKE_CXX_FLAGS}")
-  SET( CMAKE_C_FLAGS "-Wno-deprecated-declarations -std=gnu11 ${CMAKE_C_FLAGS}")
+  SET( CMAKE_CXX_FLAGS "-Werror -Wall -Wmissing-declarations -Wno-unused -Wno-error=parentheses ${CMAKE_CXX_FLAGS}")
+  SET( CMAKE_C_FLAGS "-Wno-deprecated-declarations -std=gnu11 -Wno-error=parentheses ${CMAKE_C_FLAGS}")
   SET( CMAKE_C_FLAGS_RELEASE "-O3 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 ${CMAKE_C_FLAGS}")
 ENDIF (UNIX)
 IF (MINGW)