diff --git a/similarity_search/CMakeLists.txt b/similarity_search/CMakeLists.txt
index fae4e53..529bec1 100644
--- a/similarity_search/CMakeLists.txt
+++ b/similarity_search/CMakeLists.txt
@@ -51,8 +51,8 @@ elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "Intel")
     if (CXX_COMPILER_VERSION VERSION_LESS 14.0.1)
         message(FATAL_ERROR "Intel version must be at least 14.0.1!")
     endif()
-    set (CMAKE_CXX_FLAGS_RELEASE "-Wall -Wunreachable-code -Ofast -lrt -DNDEBUG -std=c++11 -DHAVE_CXX0X -openmp   -march=native -fpic")
-    set (CMAKE_CXX_FLAGS_DEBUG   "-Wall -Wunreachable-code -ggdb  -lrt -DNDEBUG -std=c++11 -DHAVE_CXX0X -openmp   -march=native -fpic")
+    set (CMAKE_CXX_FLAGS_RELEASE "-Wall -Wunreachable-code -Ofast -lrt -DNDEBUG -std=c++11 -DHAVE_CXX0X -qopenmp   -march=native -fpic")
+    set (CMAKE_CXX_FLAGS_DEBUG   "-Wall -Wunreachable-code -ggdb  -lrt -DNDEBUG -std=c++11 -DHAVE_CXX0X -qopenmp   -march=native -fpic")
 elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
     if (CXX_COMPILER_VERSION VERSION_LESS 4.2.1)
         message(FATAL_ERROR "Clang version must be at least 3.4 (GCC >= 4.2.1 equivalent)!")