diff --git a/radio/src/tests/CMakeLists.txt b/radio/src/tests/CMakeLists.txt
index 3a7090676..65bd9fddb 100644
--- a/radio/src/tests/CMakeLists.txt
+++ b/radio/src/tests/CMakeLists.txt
@@ -1,24 +1,26 @@
-find_package(Qt4 4.8.1 REQUIRED)
-include(${QT_USE_FILE})
-
 set(GTEST_INCDIR /usr/include/gtest)
 set(GTEST_SRCDIR /usr/src/gtest)
 
-add_library(gtests-lib STATIC EXCLUDE_FROM_ALL ${GTEST_SRCDIR}/src/gtest-all.cc )
-target_include_directories(gtests-lib PUBLIC ${GTEST_INCDIR} PUBLIC ${GTEST_SRCDIR})
+if(EXISTS "${GTEST_SRCDIR}/src/gtest-all.cc")
+  add_library(gtests-lib STATIC EXCLUDE_FROM_ALL ${GTEST_SRCDIR}/src/gtest-all.cc )
+  target_include_directories(gtests-lib PUBLIC ${GTEST_INCDIR} PUBLIC ${GTEST_SRCDIR})
 
+  find_package(Qt4 4.8.1 REQUIRED)
+  include(${QT_USE_FILE})
+  add_definitions(-DSIMU)
+  set(TESTS_PATH ${RADIO_SRC_DIRECTORY})
+  configure_file(${RADIO_SRC_DIRECTORY}/tests/location.h.in ${RADIO_SRC_DIRECTORY}/tests/location.h @ONLY)
 
-add_definitions(-DSIMU)
+  foreach(FILE ${SRC})
+    set(RADIO_SRC ${RADIO_SRC} ../${FILE})
+  endforeach()
 
-set(TESTS_PATH ${RADIO_SRC_DIRECTORY})
-configure_file(${RADIO_SRC_DIRECTORY}/tests/location.h.in ${RADIO_SRC_DIRECTORY}/tests/location.h @ONLY)
+  file(GLOB TEST_SRC_FILES ${RADIO_SRC_DIRECTORY}/tests/*.cpp)
 
-foreach(FILE ${SRC})
-  set(RADIO_SRC ${RADIO_SRC} ../${FILE})
-endforeach()
-
-file(GLOB TEST_SRC_FILES ${RADIO_SRC_DIRECTORY}/tests/*.cpp)
-
-add_executable(gtests EXCLUDE_FROM_ALL ${TEST_SRC_FILES} ${RADIO_SRC} ../targets/simu/simpgmspace.cpp)
-add_dependencies(gtests ${FIRMWARE_DEPENDENCIES} gtests-lib)
-target_link_libraries(gtests gtests-lib ${QT_LIBRARIES} pthread)
+  add_executable(gtests EXCLUDE_FROM_ALL ${TEST_SRC_FILES} ${RADIO_SRC} ../targets/simu/simpgmspace.cpp)
+  add_dependencies(gtests ${FIRMWARE_DEPENDENCIES} gtests-lib)
+  target_link_libraries(gtests gtests-lib ${QT_LIBRARIES} pthread)
+  message("Added optional gtests target")
+else()
+  message("WARNING: can't find gtests source, gtest target will not be available!")
+endif()
\ No newline at end of file