diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8b7ac1af4..5105e3a1f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -164,6 +164,7 @@ ENDIF()
 IF((CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX) AND NOT CMAKE_COMPILER_IS_MINGW)
   IF (BUILD_SHARED_LIBS AND CMAKE_SIZEOF_VOID_P EQUAL 8) # -fPIC is only required for shared libs on 64 bit
      SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
   ENDIF()
   # hide all not-exported symbols
   SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -Wall -std=c++0x" )