diff --git a/dlls/ddraw/tests/ddraw1.c b/dlls/ddraw/tests/ddraw1.c
index 680738eb47c..1dc88561b4e 100644
--- a/dlls/ddraw/tests/ddraw1.c
+++ b/dlls/ddraw/tests/ddraw1.c
@@ -2258,7 +2258,7 @@ static void test_wndproc(void)
             (LONG_PTR)DefWindowProcA, proc);
     hr = IDirectDraw_SetCooperativeLevel(ddraw, window, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN);
     ok(SUCCEEDED(hr), "SetCooperativeLevel failed, hr %#x.\n", hr);
-    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, (LONG_PTR)ddraw_proc);
+    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, ddraw_proc);
     ok(proc == (LONG_PTR)DefWindowProcA, "Expected wndproc %#lx, got %#lx.\n",
             (LONG_PTR)DefWindowProcA, proc);
     ref = IDirectDraw_Release(ddraw);
diff --git a/dlls/ddraw/tests/ddraw2.c b/dlls/ddraw/tests/ddraw2.c
index fced3d943a9..91300ed38a0 100644
--- a/dlls/ddraw/tests/ddraw2.c
+++ b/dlls/ddraw/tests/ddraw2.c
@@ -2391,7 +2391,7 @@ static void test_wndproc(void)
             (LONG_PTR)DefWindowProcA, proc);
     hr = IDirectDraw2_SetCooperativeLevel(ddraw, window, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN);
     ok(SUCCEEDED(hr), "SetCooperativeLevel failed, hr %#x.\n", hr);
-    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, (LONG_PTR)ddraw_proc);
+    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, ddraw_proc);
     ok(proc == (LONG_PTR)DefWindowProcA, "Expected wndproc %#lx, got %#lx.\n",
             (LONG_PTR)DefWindowProcA, proc);
     ref = IDirectDraw2_Release(ddraw);
diff --git a/dlls/ddraw/tests/ddraw4.c b/dlls/ddraw/tests/ddraw4.c
index 5b7301552e8..d192cdf1511 100644
--- a/dlls/ddraw/tests/ddraw4.c
+++ b/dlls/ddraw/tests/ddraw4.c
@@ -2541,7 +2541,7 @@ static void test_wndproc(void)
             (LONG_PTR)DefWindowProcA, proc);
     hr = IDirectDraw4_SetCooperativeLevel(ddraw, window, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN);
     ok(SUCCEEDED(hr), "SetCooperativeLevel failed, hr %#x.\n", hr);
-    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, (LONG_PTR)ddraw_proc);
+    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, ddraw_proc);
     ok(proc == (LONG_PTR)DefWindowProcA, "Expected wndproc %#lx, got %#lx.\n",
             (LONG_PTR)DefWindowProcA, proc);
     ref = IDirectDraw4_Release(ddraw);
diff --git a/dlls/ddraw/tests/ddraw7.c b/dlls/ddraw/tests/ddraw7.c
index c3ffa45de62..b43b53881df 100644
--- a/dlls/ddraw/tests/ddraw7.c
+++ b/dlls/ddraw/tests/ddraw7.c
@@ -2216,7 +2216,7 @@ static void test_wndproc(void)
             (LONG_PTR)DefWindowProcA, proc);
     hr = IDirectDraw7_SetCooperativeLevel(ddraw, window, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN);
     ok(SUCCEEDED(hr), "SetCooperativeLevel failed, hr %#x.\n", hr);
-    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, (LONG_PTR)ddraw_proc);
+    proc = SetWindowLongPtrA(window, GWLP_WNDPROC, ddraw_proc);
     ok(proc == (LONG_PTR)DefWindowProcA, "Expected wndproc %#lx, got %#lx.\n",
             (LONG_PTR)DefWindowProcA, proc);
     ref = IDirectDraw7_Release(ddraw);