diff --git a/dlls/gdiplus/tests/font.c b/dlls/gdiplus/tests/font.c
index 2fcdb3a37da..0d7254f255e 100644
--- a/dlls/gdiplus/tests/font.c
+++ b/dlls/gdiplus/tests/font.c
@@ -69,7 +69,6 @@ static void _delete_testfontfile(const WCHAR *filename, int line)
 static void test_long_name(void)
 {
     WCHAR path[MAX_PATH];
-    static const WCHAR path_longname[] = {'w','i','n','e','_','l','o','n','g','n','a','m','e','.','t','t','f',0};
     GpStatus stat;
     GpFontCollection *fonts;
     INT num_families;
@@ -80,7 +79,7 @@ static void test_long_name(void)
     stat = GdipNewPrivateFontCollection(&fonts);
     ok(stat == Ok, "GdipNewPrivateFontCollection failed: %d\n", stat);
 
-    create_testfontfile(path_longname, 1, path);
+    create_testfontfile(L"wine_longname.ttf", 1, path);
 
     stat = GdipPrivateAddFontFile(fonts, path);
     ok(stat == Ok, "GdipPrivateAddFontFile failed: %d\n", stat);
diff --git a/dlls/gdiplus/tests/image.c b/dlls/gdiplus/tests/image.c
index 93729650de8..c1f3b126a79 100644
--- a/dlls/gdiplus/tests/image.c
+++ b/dlls/gdiplus/tests/image.c
@@ -417,7 +417,6 @@ static void test_LoadingImages(void)
     GpStatus stat;
     GpBitmap *bm;
     GpImage *img;
-    static const WCHAR nonexistentW[] = {'n','o','n','e','x','i','s','t','e','n','t',0};
 
     stat = GdipCreateBitmapFromFile(0, 0);
     expect(InvalidParameter, stat);
@@ -428,7 +427,7 @@ static void test_LoadingImages(void)
     ok(bm == (GpBitmap *)0xdeadbeef, "returned %p\n", bm);
 
     bm = (GpBitmap *)0xdeadbeef;
-    stat = GdipCreateBitmapFromFile(nonexistentW, &bm);
+    stat = GdipCreateBitmapFromFile(L"nonexistent", &bm);
     todo_wine expect(InvalidParameter, stat);
     ok(!bm, "returned %p\n", bm);
 
@@ -441,7 +440,7 @@ static void test_LoadingImages(void)
     ok(img == (GpImage *)0xdeadbeef, "returned %p\n", img);
 
     img = (GpImage *)0xdeadbeef;
-    stat = GdipLoadImageFromFile(nonexistentW, &img);
+    stat = GdipLoadImageFromFile(L"nonexistent", &img);
     todo_wine expect(OutOfMemory, stat);
     ok(!img, "returned %p\n", img);
 
@@ -454,7 +453,7 @@ static void test_LoadingImages(void)
     ok(img == (GpImage *)0xdeadbeef, "returned %p\n", img);
 
     img = (GpImage *)0xdeadbeef;
-    stat = GdipLoadImageFromFileICM(nonexistentW, &img);
+    stat = GdipLoadImageFromFileICM(L"nonexistent", &img);
     todo_wine expect(OutOfMemory, stat);
     ok(!img, "returned %p\n", img);
 }
@@ -469,7 +468,7 @@ static void test_SavingImages(void)
     REAL w, h;
     ImageCodecInfo *codecs;
     static const CHAR filenameA[] = "a.bmp";
-    static const WCHAR filename[] = { 'a','.','b','m','p',0 };
+    static const WCHAR filename[] = L"a.bmp";
 
     codecs = NULL;
 
@@ -536,8 +535,8 @@ static void test_SavingMultiPageTiff(void)
     UINT frame_count;
     static const CHAR filename1A[] = "1.tif";
     static const CHAR filename2A[] = "2.tif";
-    static const WCHAR filename1[] = { '1','.','t','i','f',0 };
-    static const WCHAR filename2[] = { '2','.','t','i','f',0 };
+    static const WCHAR filename1[] = L"1.tif";
+    static const WCHAR filename2[] = L"2.tif";
     static const WCHAR tiff_mimetype[] = { 'i','m','a','g','e','/','t','i','f','f',0 };
 
     params.Count = 1;
diff --git a/dlls/gdiplus/tests/metafile.c b/dlls/gdiplus/tests/metafile.c
index 33fff3f98cf..eaad4acdc69 100644
--- a/dlls/gdiplus/tests/metafile.c
+++ b/dlls/gdiplus/tests/metafile.c
@@ -2824,7 +2824,6 @@ static void test_fillpath(void)
 {
     static const WCHAR description[] = {'w','i','n','e','t','e','s','t',0};
     static const GpRectF frame = {0.0, 0.0, 100.0, 100.0};
-    static const WCHAR winetestemfW[] = {'w','i','n','e','t','e','s','t','.','e','m','f',0};
 
     GpMetafile *metafile;
     GpGraphics *graphics;
@@ -2870,7 +2869,7 @@ static void test_fillpath(void)
     check_emfplus(hemf, fill_path_records, "fill path");
 
     /* write to disk */
-    DeleteEnhMetaFile(CopyEnhMetaFileW(hemf, winetestemfW));
+    DeleteEnhMetaFile(CopyEnhMetaFileW(hemf, L"winetest.emf"));
 
     DeleteEnhMetaFile(hemf);
 
@@ -2878,15 +2877,15 @@ static void test_fillpath(void)
     expect(Ok, stat);
 
     /* should succeed when given path to an EMF */
-    stat = GdipCreateMetafileFromWmfFile(winetestemfW, NULL, &metafile);
+    stat = GdipCreateMetafileFromWmfFile(L"winetest.emf", NULL, &metafile);
     expect(Ok, stat);
 
     stat = GdipDisposeImage((GpImage*)metafile);
     expect(Ok, stat);
 
-    DeleteFileW(winetestemfW);
+    DeleteFileW(L"winetest.emf");
 
-    stat = GdipCreateMetafileFromWmfFile(winetestemfW, NULL, &metafile);
+    stat = GdipCreateMetafileFromWmfFile(L"winetest.emf", NULL, &metafile);
     expect(GenericError, stat);
 }