diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9104f428..ddbb73e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -117,7 +117,8 @@ target_include_directories(fmt PUBLIC
   $<INSTALL_INTERFACE:include>)
 
 set_target_properties(fmt PROPERTIES
-  VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR})
+  VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
+  DEBUG_POSTFIX d)
 
 if (BUILD_SHARED_LIBS)
   if (UNIX AND NOT APPLE)