diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56741c2..313308a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -142,8 +142,11 @@ if (UNIX)
 elseif(WIN32)
   INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/graphqlparser.lib
 	DESTINATION lib)
+  # do not install pdb when static compilation.
+  if (BUILD_SHARED_LIBS)
   INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/graphqlparser.pdb
 	DESTINATION bin)
+  endif()
 endif()
 
 IF (test)