diff --git a/src/main.cpp b/src/main.cpp
index d18814c4ae3d5..9de952a51640e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -578,6 +578,9 @@ int main( int argc, char *argv[] )
     }
 #endif
 
+    DebugLog( D_INFO, DC_ALL ) << "[main] C locale set to " << setlocale( LC_ALL, nullptr );
+    DebugLog( D_INFO, DC_ALL ) << "[main] C++ locale set to " << std::locale().name();
+
 #if defined(TILES)
     SDL_version compiled;
     SDL_VERSION( &compiled );
diff --git a/src/options.cpp b/src/options.cpp
index aa939df391d97..b5fd69c21412e 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -3130,4 +3130,7 @@ void options_manager::update_global_locale()
     } catch( std::runtime_error &e ) {
         std::locale::global( std::locale() );
     }
+
+    DebugLog( D_INFO, DC_ALL ) << "[options] C locale set to " << setlocale( LC_ALL, nullptr );
+    DebugLog( D_INFO, DC_ALL ) << "[options] C++ locale set to " << std::locale().name();
 }
diff --git a/src/translations.cpp b/src/translations.cpp
index cfd8eb4764add..488b9abab45d2 100644
--- a/src/translations.cpp
+++ b/src/translations.cpp
@@ -207,6 +207,8 @@ void set_language()
     if( setlocale( LC_ALL, ".1252" ) == nullptr ) {
         DebugLog( D_WARNING, D_MAIN ) << "Error while setlocale(LC_ALL, '.1252').";
     }
+    DebugLog( D_INFO, DC_ALL ) << "[translations] C locale set to " << setlocale( LC_ALL, nullptr );
+    DebugLog( D_INFO, DC_ALL ) << "[translations] C++ locale set to " << std::locale().name();
 #endif
 
     // Step 2. Bind to gettext domain.