diff --git a/dlls/wineoss.drv/audio.c b/dlls/wineoss.drv/audio.c
index 3a8d3ad0899..a008236520a 100644
--- a/dlls/wineoss.drv/audio.c
+++ b/dlls/wineoss.drv/audio.c
@@ -3167,7 +3167,7 @@ DWORD WINAPI OSS_widMessage(WORD wDevID, WORD wMsg, DWORD_PTR dwUser,
 DWORD WINAPI OSS_wodMessage(WORD wDevID, WORD wMsg, DWORD_PTR dwUser,
 			    DWORD_PTR dwParam1, DWORD_PTR dwParam2)
 {
-    FIXME("(%u, %04X, %08X, %08X, %08X):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
+    FIXME("(%u, %04X, %08lX, %08lX, %08lX):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
     return MMSYSERR_NOTENABLED;
 }
 
@@ -3177,7 +3177,7 @@ DWORD WINAPI OSS_wodMessage(WORD wDevID, WORD wMsg, DWORD_PTR dwUser,
 DWORD WINAPI OSS_widMessage(WORD wDevID, WORD wMsg, DWORD_PTR dwUser,
 			    DWORD_PTR dwParam1, DWORD_PTR dwParam2)
 {
-    FIXME("(%u, %04X, %08X, %08X, %08X):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
+    FIXME("(%u, %04X, %08lX, %08lX, %08lX):stub\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
     return MMSYSERR_NOTENABLED;
 }
 
diff --git a/dlls/wineoss.drv/mixer.c b/dlls/wineoss.drv/mixer.c
index b1ebd4b9823..241aa0c2cd7 100644
--- a/dlls/wineoss.drv/mixer.c
+++ b/dlls/wineoss.drv/mixer.c
@@ -1561,7 +1561,7 @@ DWORD WINAPI OSS_mxdMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser,
 	return MMSYSERR_NOTSUPPORTED;
     }
 #else
-    TRACE("(%04X, %04X, %08X, %08X, %08X);\n", wDevID, wMsg,
+    TRACE("(%04X, %04X, %08lX, %08lX, %08lX);\n", wDevID, wMsg,
           dwUser, dwParam1, dwParam2);
 
     return MMSYSERR_NOTENABLED;