diff --git a/dlls/ttydrv/ttydrv.spec b/dlls/ttydrv/ttydrv.spec
index 4f10c4ce0b5..2eed7f88458 100644
--- a/dlls/ttydrv/ttydrv.spec
+++ b/dlls/ttydrv/ttydrv.spec
@@ -3,7 +3,7 @@
 @ cdecl Arc(ptr long long long long long long long long) TTYDRV_DC_Arc
 @ cdecl BitBlt(ptr long long long long ptr long long long) TTYDRV_DC_BitBlt
 @ cdecl Chord(ptr long long long long long long long long) TTYDRV_DC_Chord
-@ cdecl CreateDC(ptr ptr str str str ptr) TTYDRV_DC_CreateDC
+@ cdecl CreateDC(ptr ptr wstr wstr wstr ptr) TTYDRV_DC_CreateDC
 @ cdecl DeleteDC(ptr) TTYDRV_DC_DeleteDC
 @ cdecl Ellipse(ptr long long long long) TTYDRV_DC_Ellipse
 @ cdecl ExtFloodFill(ptr long long long long) TTYDRV_DC_ExtFloodFill
diff --git a/dlls/x11drv/x11drv.spec b/dlls/x11drv/x11drv.spec
index e38f95d1fbd..ae68b95105c 100644
--- a/dlls/x11drv/x11drv.spec
+++ b/dlls/x11drv/x11drv.spec
@@ -5,7 +5,7 @@
 @ cdecl ChoosePixelFormat(ptr ptr) X11DRV_ChoosePixelFormat
 @ cdecl Chord(ptr long long long long long long long long) X11DRV_Chord
 @ cdecl CreateBitmap(ptr long) X11DRV_CreateBitmap
-@ cdecl CreateDC(ptr ptr str str str ptr) X11DRV_CreateDC
+@ cdecl CreateDC(ptr ptr wstr wstr wstr ptr) X11DRV_CreateDC
 @ cdecl CreateDIBSection(ptr ptr long ptr long long long) X11DRV_DIB_CreateDIBSection
 @ cdecl DeleteBitmap(long) X11DRV_DeleteBitmap
 @ cdecl DeleteDC(ptr) X11DRV_DeleteDC