diff --git a/include/fmt/core.h b/include/fmt/core.h
index c30e8b47..a867d8d7 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -113,12 +113,12 @@
 
 // Check if exceptions are disabled.
 #ifndef FMT_EXCEPTIONS
-#if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \
-    FMT_MSC_VER && !_HAS_EXCEPTIONS
-# define FMT_EXCEPTIONS 0
-#else
-# define FMT_EXCEPTIONS 1
-#endif
+# if (defined(__GNUC__) && !defined(__EXCEPTIONS)) || \
+     FMT_MSC_VER && !_HAS_EXCEPTIONS
+#  define FMT_EXCEPTIONS 0
+# else
+#  define FMT_EXCEPTIONS 1
+# endif
 #endif
 
 // Define FMT_USE_NOEXCEPT to make fmt use noexcept (C++11 feature).