diff --git a/dlls/dinput/ansi.c b/dlls/dinput/ansi.c
index 431b812aeb2..390b2f56581 100644
--- a/dlls/dinput/ansi.c
+++ b/dlls/dinput/ansi.c
@@ -92,7 +92,7 @@ static void dideviceobjectinstance_wtoa( const DIDEVICEOBJECTINSTANCEW *in, DIDE
     out->wUsage = in->wUsage;
     out->dwDimension = in->dwDimension;
     out->wExponent = in->wExponent;
-    out->wReserved = in->wReserved;
+    out->wReportId = in->wReportId;
 }
 
 static void dideviceinstance_wtoa( const DIDEVICEINSTANCEW *in, DIDEVICEINSTANCEA *out )
diff --git a/include/dinput.h b/include/dinput.h
index 2d183bbc944..a073054b388 100644
--- a/include/dinput.h
+++ b/include/dinput.h
@@ -358,7 +358,7 @@ typedef struct DIDEVICEOBJECTINSTANCEA {
     WORD	wUsage;
     DWORD	dwDimension;
     WORD	wExponent;
-    WORD	wReserved;
+    WORD	wReportId;
 } DIDEVICEOBJECTINSTANCEA, *LPDIDEVICEOBJECTINSTANCEA;
 typedef const DIDEVICEOBJECTINSTANCEA *LPCDIDEVICEOBJECTINSTANCEA;
 
@@ -377,7 +377,7 @@ typedef struct DIDEVICEOBJECTINSTANCEW {
     WORD	wUsage;
     DWORD	dwDimension;
     WORD	wExponent;
-    WORD	wReserved;
+    WORD	wReportId;
 } DIDEVICEOBJECTINSTANCEW, *LPDIDEVICEOBJECTINSTANCEW;
 typedef const DIDEVICEOBJECTINSTANCEW *LPCDIDEVICEOBJECTINSTANCEW;