diff --git a/libgeotiff/CMakeLists.txt b/libgeotiff/CMakeLists.txt
index 80fe121..5c1430d 100644
--- a/libgeotiff/CMakeLists.txt
+++ b/libgeotiff/CMakeLists.txt
@@ -80,8 +80,12 @@ SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
 
 IF(WIN32)
     IF(MSVC)
-        ADD_DEFINITIONS(-DBUILD_AS_DLL=1)
-        ADD_DEFINITIONS(/DW4)
+        IF(BUILD_SHARED_LIBS)
+		    ADD_DEFINITIONS(-DBUILD_AS_DLL=1)
+        ELSE()
+		    ADD_DEFINITIONS(-DBUILD_AS_DLL=0)
+		ENDIF()
+		ADD_DEFINITIONS(/DW4)
         if (NOT (MSVC_VERSION VERSION_LESS 1400))
             ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)
             ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)