diff --git a/example/fmtlib_class_formatter.cpp b/example/fmtlib_class_formatter.cpp
index 7308e5a..2e0d28d 100644
--- a/example/fmtlib_class_formatter.cpp
+++ b/example/fmtlib_class_formatter.cpp
@@ -18,7 +18,7 @@ template<class T> struct fmt::formatter<T, char, std::enable_if_t<
 
         if( it != end && *it != '}' )
         {
-            ctx.error_handler().on_error( "invalid format" );
+            throw_format_error( "invalid format" );
         }
 
         return it;
diff --git a/example/fmtlib_enum_formatter.cpp b/example/fmtlib_enum_formatter.cpp
index 09e60f9..15a18cf 100644
--- a/example/fmtlib_enum_formatter.cpp
+++ b/example/fmtlib_enum_formatter.cpp
@@ -25,7 +25,7 @@ public:
 
         if( i1 != i2 )
         {
-            ctx.error_handler().on_error( "invalid format" );
+            throw_format_error( "invalid format" );
         }
 
         return i1;