diff --git a/tests/auto/debugger/debugger.pro b/tests/auto/debugger/debugger.pro
index 164bede576a..3535e9c53af 100644
--- a/tests/auto/debugger/debugger.pro
+++ b/tests/auto/debugger/debugger.pro
@@ -1,10 +1,17 @@
 
 TEMPLATE = subdirs
 
-SUBDIRS += gdb.pro
-SUBDIRS += dumpers.pro
+gdb.file = gdb.pro
+simplifytypes.file = simplifytypes.pro
+
+# avoid race condition when compiling with multiple jobs
+dumpers.depends = gdb simplifytypes
+dumpers.file = dumpers.pro
+
+SUBDIRS += gdb
+SUBDIRS += simplifytypes
+SUBDIRS += dumpers
 SUBDIRS += namedemangler.pro
-SUBDIRS += simplifytypes.pro
 SUBDIRS += disassembler.pro
 SUBDIRS += offsets.pro