diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -214,6 +214,7 @@
 	-Wshadow-field
 	-Wrange-loop-analysis
 	-Wredundant-decls
+	-Wunreachable-code-loop-increment
 )
 add_compiler_flag_group(-Wformat -Wformat-security)
 add_cxx_compiler_flags(
diff --git a/src/util/translation.h b/src/util/translation.h
--- a/src/util/translation.h
+++ b/src/util/translation.h
@@ -23,6 +23,8 @@
         translated += rhs.translated;
         return *this;
     }
+
+    bool empty() const { return original.empty(); }
 };
 
 inline bilingual_str operator+(bilingual_str lhs, const bilingual_str &rhs) {
diff --git a/test/functional/feature_config_args.py b/test/functional/feature_config_args.py
--- a/test/functional/feature_config_args.py
+++ b/test/functional/feature_config_args.py
@@ -85,7 +85,6 @@
             inc_conf_file_path +
             ':1 Section [testnot] is not recognized.' +
             os.linesep +
-            'Warning: ' +
             inc_conf_file2_path +
             ':1 Section [testnet] is not recognized.')