diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0baf60..012512a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -94,7 +94,7 @@ else()
   target_compile_definitions( date INTERFACE ONLY_C_LOCALE=0 )
 endif()
 if ( DISABLE_STRING_VIEW )
-  target_compile_definitions( date INTERFACE HAS_STRING_VIEW=0 )
+  target_compile_definitions( date INTERFACE HAS_STRING_VIEW=0 -DHAS_DEDUCTION_GUIDES=0 )
 endif()
 
 #[===================================================================[