diff --git a/CMakeLists.txt b/CMakeLists.txt
index 85df27fa1..028e9664b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -359,6 +359,7 @@ endif(ENABLE_RTI)
 
 # Check if the flag ENABLE_SIMD was enabled during the compilation of SimGear.
 # The same value has to be carried over for FlightGear to prevent crashes.
+include_directories(${SIMGEAR_INCLUDE_DIRS})
 try_run(ENABLE_SIMD COMPILE_RESULT_TEST_SIMD ${CMAKE_CURRENT_BINARY_DIR}
   ${CMAKE_CURRENT_SOURCE_DIR}/tests/test-simd-enabled.c)
 
@@ -447,7 +448,6 @@ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LD_FLAGS}")
 include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS}
     ${Boost_INCLUDE_DIRS}
     ${OPENGL_INCLUDE_DIR}
-    ${SIMGEAR_INCLUDE_DIRS}
     ${PLIB_INCLUDE_DIR}
     ${SQLITE3_INCLUDED_DIR} )
 
diff --git a/tests/test-simd-enabled.c b/tests/test-simd-enabled.c
index 20d4e9d54..5a6f391ad 100644
--- a/tests/test-simd-enabled.c
+++ b/tests/test-simd-enabled.c
@@ -1,4 +1,4 @@
-#include <simgear/simgear_config.h>
+#include "simgear/simgear_config.h"
 
 int main(void) {
   #ifdef ENABLE_SIMD