diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9bfe65b..e5db0e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,17 +16,23 @@ set(CMAKE_MODULE_PATH
 find_package(OpenMP REQUIRED)
 find_package(GMP REQUIRED)
 
+include_directories(
+	${GMP_INCLUDE_DIR})
+
 set(SRCS
     src/Main.cpp)
 
 set(CMAKE_CXX_FLAGS "-std=c++11 ${OpenMP_CXX_FLAGS} -fno-elide-constructors -pedantic-errors -Wall -Wextra -Werror -Wpedantic -Winit-self -Wmissing-declarations -Wuninitialized -Wfatal-errors")
-set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS} -O3")
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS} -g -O0")
-set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS} -g -O3")
-set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS} -Os")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")
+set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-g -O3")
+set(CMAKE_CXX_FLAGS_MINSIZEREL "-Os")
 
 if(NOT CMAKE_BUILD_TYPE MATCHES Debug AND NOT CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
 	add_definitions(-DNDEBUG)
 endif()
 
 add_executable(${TARGET_NAME} ${SRCS})
+
+target_link_libraries(${TARGET_NAME}
+	${GMP_LIBRARY})