diff --git a/README-SDL.md b/README-SDL.md
index f25715770..a86a7bb97 100644
--- a/README-SDL.md
+++ b/README-SDL.md
@@ -97,6 +97,7 @@ The above will give you a nicely scalend game screen and the menu for launching
 'F11' - show FPS counter
 'F6' - Screenshot
 'ALT-ENTER' - Switch window/fullscreen
+'+'/'-' - Volume controls
 
 ## SDL2 in menu controls
 
diff --git a/src/burner/sdl/run.cpp b/src/burner/sdl/run.cpp
index 75e477bcd..6c785f505 100644
--- a/src/burner/sdl/run.cpp
+++ b/src/burner/sdl/run.cpp
@@ -475,7 +475,22 @@ int RunMessageLoop()
 						bscreenshot = 1;
 					}
 					break;
-	
+				case SDLK_KP_MINUS: // volumme -
+					nAudVolume -= 500;
+					if (nAudVolume < 0) {
+						nAudVolume = 0;
+					}
+					if (AudSoundSetVolume() == 0) {
+					}
+					break;
+				case SDLK_KP_PLUS: // volume -+
+					nAudVolume += 500;
+					if (nAudVolume > 10000) {
+						nAudVolume = 10000;
+					}
+					if (AudSoundSetVolume() == 0) {
+					}
+					break;
 				default:
 					break;
 				}
diff --git a/src/intf/audio/sdl/aud_sdl.cpp b/src/intf/audio/sdl/aud_sdl.cpp
index ea25adde7..5c0063fb3 100644
--- a/src/intf/audio/sdl/aud_sdl.cpp
+++ b/src/intf/audio/sdl/aud_sdl.cpp
@@ -216,6 +216,9 @@ static int SDLSoundStop()
 
 static int SDLSoundSetVolume()
 {
+	nSDLVolume = int(SDL_MIX_MAXVOLUME * nAudVolume / 10000);
+	if (nSDLVolume > SDL_MIX_MAXVOLUME) nSDLVolume=SDL_MIX_MAXVOLUME;
+	if (nSDLVolume < 0) nSDLVolume=0;
 	return 1;
 }