diff --git a/src/Functions/CMakeLists.txt b/src/Functions/CMakeLists.txt
index 4f6952aad8f..0a99a034a33 100644
--- a/src/Functions/CMakeLists.txt
+++ b/src/Functions/CMakeLists.txt
@@ -67,7 +67,7 @@ option(STRIP_DEBUG_SYMBOLS_FUNCTIONS
     Provides faster linking and lower binary size.
     Tradeoff is the inability to debug some source files with e.g. gdb
     (empty stack frames and no local variables)."
-    STRIP_DSF_DEFAULT)
+    ${STRIP_DSF_DEFAULT})
 
 if (STRIP_DEBUG_SYMBOLS_FUNCTIONS)
     message(WARNING "Not generating debugger info for ClickHouse functions")