diff --git a/engine/key_modifiers.h b/engine/key_modifiers.h
new file mode 100644
index 00000000..a07e1829
--- /dev/null
+++ b/engine/key_modifiers.h
@@ -0,0 +1,35 @@
+/*
+key_modifiers.h - enumeration of possible key modifiers
+Copyright (C) 2022 FWGS Team
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+
+#pragma once
+#ifndef KEY_MODIFIERS_H
+#define KEY_MODIFIERS_H
+
+typedef enum
+{
+	KeyModifier_None = 0,
+	KeyModifier_LeftShift = (1 << 0),
+	KeyModifier_RightShift = (1 << 1),
+	KeyModifier_LeftCtrl = (1 << 2),
+	KeyModifier_RightCtrl = (1 << 3),
+	KeyModifier_LeftAlt = (1 << 4),
+	KeyModifier_RightAlt = (1 << 5),
+	KeyModifier_LeftSuper = (1 << 6),
+	KeyModifier_RightSuper = (1 << 7),
+	KeyModifier_NumLock = (1 << 8),
+	KeyModifier_CapsLock = (1 << 9)
+} key_modifier_t;
+
+#endif
diff --git a/engine/platform/platform.h b/engine/platform/platform.h
index 02645265..a353f407 100644
--- a/engine/platform/platform.h
+++ b/engine/platform/platform.h
@@ -21,6 +21,7 @@ GNU General Public License for more details.
 #include "system.h"
 #include "defaults.h"
 #include "cursor_type.h"
+#include "key_modifiers.h"
 
 /*
 ==============================================================================
@@ -73,6 +74,7 @@ void*Platform_GetNativeObject( const char *name );
 int Platform_JoyInit( int numjoy ); // returns number of connected gamepads, negative if error
 // Text input
 void Platform_EnableTextInput( qboolean enable );
+key_modifier_t Platform_GetKeyModifiers( void );
 // System events
 void Platform_RunEvents( void );
 // Mouse
diff --git a/engine/platform/sdl/in_sdl.c b/engine/platform/sdl/in_sdl.c
index dec29ed1..1d1a19fe 100644
--- a/engine/platform/sdl/in_sdl.c
+++ b/engine/platform/sdl/in_sdl.c
@@ -323,4 +323,41 @@ void Platform_SetCursorType( cursor_type_t type )
 #endif
 }
 
+/*
+========================
+Platform_GetKeyModifiers
+
+========================
+*/
+key_modifier_t Platform_GetKeyModifiers( void )
+{
+	SDL_Keymod modFlags;
+	key_modifier_t resultFlags;
+
+	resultFlags = KeyModifier_None;
+	modFlags = SDL_GetModState();
+	if( FBitSet( modFlags, KMOD_LCTRL ))
+		SetBits( resultFlags, KeyModifier_LeftCtrl );
+	if( FBitSet( modFlags, KMOD_RCTRL ))
+		SetBits( resultFlags, KeyModifier_RightCtrl );
+	if( FBitSet( modFlags, KMOD_RSHIFT ))
+		SetBits( resultFlags, KeyModifier_RightShift );
+	if( FBitSet( modFlags, KMOD_LSHIFT ))
+		SetBits( resultFlags, KeyModifier_LeftShift );
+	if( FBitSet( modFlags, KMOD_LALT ))
+		SetBits( resultFlags, KeyModifier_LeftAlt );
+	if( FBitSet( modFlags, KMOD_RALT ))
+		SetBits( resultFlags, KeyModifier_RightAlt );
+	if( FBitSet( modFlags, KMOD_NUM ))
+		SetBits( resultFlags, KeyModifier_NumLock );
+	if( FBitSet( modFlags, KMOD_CAPS ))
+		SetBits( resultFlags, KeyModifier_CapsLock );
+	if( FBitSet( modFlags, KMOD_RGUI ))
+		SetBits( resultFlags, KeyModifier_RightSuper );
+	if( FBitSet( modFlags, KMOD_LGUI ))
+		SetBits( resultFlags, KeyModifier_LeftSuper );
+
+	return resultFlags;
+}
+
 #endif // XASH_DEDICATED