diff --git a/dlls/d3dx9_36/mesh.c b/dlls/d3dx9_36/mesh.c
index b1a1a768a64..746b4799dfa 100644
--- a/dlls/d3dx9_36/mesh.c
+++ b/dlls/d3dx9_36/mesh.c
@@ -3180,7 +3180,7 @@ static HRESULT parse_mesh(ID3DXFileData *filedata, struct mesh_data *mesh_data,
     ID3DXFileData *child = NULL;
     DWORD i;
     SIZE_T nb_children;
-    DWORD nb_skin_weigths_info = 0;
+    DWORD nb_skin_weights_info = 0;
 
     /*
      * template Mesh {
@@ -3310,14 +3310,14 @@ static HRESULT parse_mesh(ID3DXFileData *filedata, struct mesh_data *mesh_data,
                     goto end;
             } else if (IsEqualGUID(&type, &DXFILEOBJ_SkinWeights)) {
                 if (!mesh_data->skin_info) {
-                    WARN("Skin weigths found but skin mesh header not encountered yet\n");
+                    WARN("Skin weights found but skin mesh header not encountered yet\n");
                     hr = E_FAIL;
                     goto end;
                 }
-                hr = parse_skin_mesh_info(child, mesh_data, nb_skin_weigths_info);
+                hr = parse_skin_mesh_info(child, mesh_data, nb_skin_weights_info);
                 if (FAILED(hr))
                     goto end;
-                nb_skin_weigths_info++;
+                nb_skin_weights_info++;
             }
         }
         if (FAILED(hr))
@@ -3327,9 +3327,9 @@ static HRESULT parse_mesh(ID3DXFileData *filedata, struct mesh_data *mesh_data,
         child = NULL;
     }
 
-    if (mesh_data->skin_info && (nb_skin_weigths_info != mesh_data->nb_bones)) {
+    if (mesh_data->skin_info && (nb_skin_weights_info != mesh_data->nb_bones)) {
         WARN("Mismatch between nb skin weights info %u encountered and nb bones %u from skin mesh header\n",
-             nb_skin_weigths_info, mesh_data->nb_bones);
+             nb_skin_weights_info, mesh_data->nb_bones);
         hr = E_FAIL;
         goto end;
     }
@@ -7005,7 +7005,7 @@ HRESULT WINAPI D3DXWeldVertices(ID3DXMesh *mesh, DWORD flags, const D3DXWELDEPSI
 
     if (flags == 0)
     {
-        WARN("No flags is undefined. Using D3DXWELDEPSILONS_WELDPARTIALMATCHES instead.\n");
+        WARN("No flags are undefined. Using D3DXWELDEPSILONS_WELDPARTIALMATCHES instead.\n");
         flags = D3DXWELDEPSILONS_WELDPARTIALMATCHES;
     }
 
diff --git a/dlls/d3dx9_36/surface.c b/dlls/d3dx9_36/surface.c
index f1870315911..295ef6335f3 100644
--- a/dlls/d3dx9_36/surface.c
+++ b/dlls/d3dx9_36/surface.c
@@ -1758,7 +1758,7 @@ HRESULT WINAPI D3DXLoadSurfaceFromMemory(IDirect3DSurface9 *dst_surface,
     D3DLOCKED_RECT lockrect;
     struct volume src_size, dst_size;
 
-    TRACE("(%p, %p, %s, %p, %#x, %u, %p, %s %#x, 0x%08x)\n",
+    TRACE("(%p, %p, %s, %p, %#x, %u, %p, %s, %#x, 0x%08x)\n",
             dst_surface, dst_palette, wine_dbgstr_rect(dst_rect), src_memory, src_format,
             src_pitch, src_palette, wine_dbgstr_rect(src_rect), filter, color_key);
 
@@ -2006,7 +2006,7 @@ HRESULT WINAPI D3DXSaveSurfaceToFileInMemory(ID3DXBuffer **dst_buffer, D3DXIMAGE
 
     if (src_palette)
     {
-        FIXME("Saving surfaces with palettized pixel formats not implemented yet\n");
+        FIXME("Saving surfaces with palettized pixel formats is not implemented yet\n");
         return D3DERR_INVALIDCALL;
     }
 
diff --git a/dlls/d3dx9_36/texture.c b/dlls/d3dx9_36/texture.c
index de423076d18..38349e2e33e 100644
--- a/dlls/d3dx9_36/texture.c
+++ b/dlls/d3dx9_36/texture.c
@@ -269,7 +269,7 @@ HRESULT WINAPI D3DXCheckTextureRequirements(struct IDirect3DDevice9 *device, UIN
         unsigned int channels;
         const struct pixel_format_desc *curfmt, *bestfmt = NULL;
 
-        TRACE("Requested format not supported, looking for a fallback.\n");
+        TRACE("Requested format is not supported, looking for a fallback.\n");
 
         if (!fmt)
         {
@@ -661,7 +661,7 @@ HRESULT WINAPI D3DXCreateTextureFromFileInMemoryEx(struct IDirect3DDevice9 *devi
 
     if (imginfo.MipLevels < miplevels && (D3DFMT_DXT1 <= imginfo.Format && imginfo.Format <= D3DFMT_DXT5))
     {
-        FIXME("Generation of mipmaps for compressed pixel formats is not implemented yet\n");
+        FIXME("Generation of mipmaps for compressed pixel formats is not implemented yet.\n");
         miplevels = imginfo.MipLevels;
     }
     if (imginfo.ResourceType == D3DRTYPE_VOLUMETEXTURE
@@ -1219,7 +1219,7 @@ HRESULT WINAPI D3DXCreateVolumeTextureFromFileInMemoryEx(IDirect3DDevice9 *devic
 
     if (mip_levels > image_info.MipLevels)
     {
-        FIXME("Generation of mipmaps for volume textures is not implemented yet\n");
+        FIXME("Generation of mipmaps for volume textures is not implemented yet.\n");
         mip_levels = image_info.MipLevels;
     }
 
@@ -1460,7 +1460,7 @@ HRESULT WINAPI D3DXCreateCubeTextureFromFileInMemoryEx(IDirect3DDevice9 *device,
 
     if (mip_levels > img_info.MipLevels && (D3DFMT_DXT1 <= img_info.Format && img_info.Format <= D3DFMT_DXT5))
     {
-        FIXME("Generation of mipmaps for compressed pixel formats not supported yet\n");
+        FIXME("Generation of mipmaps for compressed pixel formats is not supported yet.\n");
         mip_levels = img_info.MipLevels;
     }
 
diff --git a/dlls/d3dx9_36/volume.c b/dlls/d3dx9_36/volume.c
index 52683da0209..fae85428bff 100644
--- a/dlls/d3dx9_36/volume.c
+++ b/dlls/d3dx9_36/volume.c
@@ -189,7 +189,7 @@ HRESULT WINAPI D3DXLoadVolumeFromMemory(IDirect3DVolume9 *dst_volume,
         if (((src_format_desc->type != FORMAT_ARGB) && (src_format_desc->type != FORMAT_INDEX)) ||
             (dst_format_desc->type != FORMAT_ARGB))
         {
-            FIXME("Pixel format conversion not implemented %#x -> %#x\n",
+            FIXME("Pixel format conversion is not implemented %#x -> %#x\n",
                     src_format_desc->format, dst_format_desc->format);
             return E_NOTIMPL;
         }
diff --git a/dlls/d3dx9_36/xfile.c b/dlls/d3dx9_36/xfile.c
index 7386ec905ba..eda0d7e1adb 100644
--- a/dlls/d3dx9_36/xfile.c
+++ b/dlls/d3dx9_36/xfile.c
@@ -331,7 +331,7 @@ static HRESULT d3dx9_file_data_create(IDirectXFileObject *dxfile_object, ID3DXFi
         }
         else
         {
-            FIXME("Don't known what to do with binary object\n");
+            FIXME("Don't know what to do with binary object\n");
             HeapFree(GetProcessHeap(), 0, object);
             return E_FAIL;
         }