diff --git a/cmake/config.h.in b/cmake/config.h.in
index 78d63af..5581ad6 100644
--- a/cmake/config.h.in
+++ b/cmake/config.h.in
@@ -3,7 +3,7 @@
 #cmakedefine CPPLOGGING_HAS_CPPCORE
 #cmakedefine CPPLOGGING_HAS_NLOHMANN_JSON
 
-#ifdef CPPCURL_HAS_CPPCORE
+#ifdef CPPLOGGING_HAS_CPPCORE
     #include <cppcore/conversion/convert_cast.h>
     #define cpplogging_convert_cast ::cppcore::convert_cast
 #else