diff --git a/src/nvtt/squish/CMakeLists.txt b/src/nvtt/squish/CMakeLists.txt
index 2edc683..6e475c5 100644
--- a/src/nvtt/squish/CMakeLists.txt
+++ b/src/nvtt/squish/CMakeLists.txt
@@ -22,7 +22,9 @@ SET(SQUISH_SRCS
 
 ADD_LIBRARY(squish STATIC ${SQUISH_SRCS})
 
-IF(CMAKE_COMPILER_IS_GNUCXX)
-	SET_TARGET_PROPERTIES(squish PROPERTIES COMPILE_FLAGS -fPIC)
-ENDIF(CMAKE_COMPILER_IS_GNUCXX)
+IF(NOT WIN32)
+    IF(CMAKE_COMPILER_IS_GNUCXX)
+        SET_TARGET_PROPERTIES(squish PROPERTIES COMPILE_FLAGS -fPIC)
+    ENDIF(CMAKE_COMPILER_IS_GNUCXX)
+ENDIF(NOT WIN32)