diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index a5eb605..6e3aa97 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -211,9 +211,9 @@ if(PTHREAD_HAS_MUTEX_RECURSIVE)
 endif(PTHREAD_HAS_MUTEX_RECURSIVE)
 # End of PTHREAD_MUTEX_RECURSIVE Test
 
-set(CMAKE_CXX_FLAGS_RELEASE         "-O2 -w -fexceptions -DNDEBUG -include tqt.h")
-set(CMAKE_CXX_FLAGS_RELWITHDEBINFO  "-O2 -g -Wall -fexceptions -DDEBUG -include tqt.h")
-set(CMAKE_CXX_FLAGS_DEBUG           "-O0 -g3 -Wall -fexceptions -DDEBUG -include tqt.h")
+set(CMAKE_CXX_FLAGS_RELEASE         "-O2 -w -fexceptions -DNDEBUG")
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO  "-O2 -g -Wall -fexceptions -DDEBUG")
+set(CMAKE_CXX_FLAGS_DEBUG           "-O0 -g3 -Wall -fexceptions -DDEBUG")
 
 message(STATUS "Rosegarden ${PACKAGE_VERSION} will be built for install into ${CMAKE_INSTALL_PREFIX}")