--- qt/mkspecs/features/toolchain.prf.msys	2019-04-25 09:58:10.996907700 +0200
+++ qt/mkspecs/features/toolchain.prf	2019-04-25 10:36:29.811270800 +0200
@@ -267,8 +267,10 @@ isEmpty($${target_prefix}.INCDIRS) {
             for (line, output) {
                 contains(line, "^libraries: .*") {
                     line ~= s,^libraries: ,,
-                    # clang (7.x) on Windows uses the wrong path list separator ...
-                    equals(QMAKE_HOST.os, Windows): line ~= s,:(?![/\\\\]),;,
+                    !mingw {
+                        # clang (7.x) on Windows uses the wrong path list separator ...
+                        equals(QMAKE_HOST.os, Windows): line ~= s,:(?![/\\\\]),;,
+                    }
                     paths = $$split(line, $$QMAKE_DIRLIST_SEP)
                     for (path, paths): \
                         QMAKE_DEFAULT_LIBDIRS += $$clean_path($$replace(path, ^=, $$[SYSROOT]))