1 files changed, 5 insertions, 0 deletions
diff --git a/Parser/string_parser.c b/Parser/string_parser.c
index fae2a36..65ddd46 100644
--- a/Parser/string_parser.c
+++ b/Parser/string_parser.c
@@ -357,7 +357,12 @@ fstring_compile_expr(Parser *p, const char *expr_start, const char *expr_end,
             break;
         }
     }
+    
     if (s == expr_end) {
+        if (*expr_end == '!' || *expr_end == ':' || *expr_end == '=') {
+            RAISE_SYNTAX_ERROR("f-string: expression required before '%c'", *expr_end);
+            return NULL;
+        }
         RAISE_SYNTAX_ERROR("f-string: empty expression not allowed");
         return NULL;
     }