diff --git a/build/cmake/source_groups.cmake b/build/cmake/source_groups.cmake
index 5ac00c228a..b777c93446 100644
--- a/build/cmake/source_groups.cmake
+++ b/build/cmake/source_groups.cmake
@@ -11,22 +11,22 @@
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
 function(wx_set_source_groups)
-    source_group("Common Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/.*\\.h")
-    source_group("Common Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/common/.*")
-    source_group("GTK+ Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/gtk/.*")
-    source_group("MSW Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/msw/.*")
-    source_group("OSX Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/osx/.*")
-    source_group("Generic Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/generic/.*")
-    source_group("wxUniv Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/univ/.*")
-    source_group("wxHTML Sources" REGULAR_EXPRESSION "${wxSOURCE_DIR}/src/html/.*")
-    source_group("Setup Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/.*/setup.h")
-    source_group("GTK+ Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/gtk/.*")
-    source_group("MSW Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/msw/.*")
-    source_group("OSX Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/osx/.*")
-    source_group("Generic Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/generic/.*")
-    source_group("wxUniv Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/univ/.*")
-    source_group("wxHTML Headers" REGULAR_EXPRESSION "${wxSOURCE_DIR}/include/wx/html/.*")
+    source_group("Common Headers" REGULAR_EXPRESSION "/include/wx/.*\\.h")
+    source_group("Common Sources" REGULAR_EXPRESSION "/src/common/.*")
+    source_group("GTK+ Sources" REGULAR_EXPRESSION "/src/gtk/.*")
+    source_group("MSW Sources" REGULAR_EXPRESSION "/src/msw/.*")
+    source_group("OSX Sources" REGULAR_EXPRESSION "/src/osx/.*")
+    source_group("Generic Sources" REGULAR_EXPRESSION "/src/generic/.*")
+    source_group("wxUniv Sources" REGULAR_EXPRESSION "/src/univ/.*")
+    source_group("wxHTML Sources" REGULAR_EXPRESSION "/src/html/.*")
+    source_group("Setup Headers" REGULAR_EXPRESSION "/include/.*/setup.h")
+    source_group("GTK+ Headers" REGULAR_EXPRESSION "/include/wx/gtk/.*")
+    source_group("MSW Headers" REGULAR_EXPRESSION "/include/wx/msw/.*")
+    source_group("OSX Headers" REGULAR_EXPRESSION "/include/wx/osx/.*")
+    source_group("Generic Headers" REGULAR_EXPRESSION "/include/wx/generic/.*")
+    source_group("wxUniv Headers" REGULAR_EXPRESSION "/include/wx/univ/.*")
+    source_group("wxHTML Headers" REGULAR_EXPRESSION "/include/wx/html/.*")
     source_group("Setup Headers" FILES ${wxSETUP_HEADER_FILE})
-    source_group("Resource Files" REGULAR_EXPRESSION "${wxSOURCE_DIR}/[^.]*.(rc|ico|png|icns|manifest|plist)$")
+    source_group("Resource Files" REGULAR_EXPRESSION "/[^.]*.(rc|ico|png|icns|manifest|plist)$")
     source_group("CMake" REGULAR_EXPRESSION "(CMakeLists\\.txt|cmake_pch.*|.*_CXX_prefix\\.hxx\\.rule)$")
 endfunction()