diff --git a/Modules/Setup.guido b/Modules/Setup.guido
index 8ed5a1e877c..36cdce3a874 100644
--- a/Modules/Setup.guido
+++ b/Modules/Setup.guido
@@ -31,7 +31,7 @@
 DESTLIB=$(prefix)/lib/python
 
 # Standard enabled (tests are always available)
-TESTPATH=$(DESTLIB)/test
+TESTPATH=:$(DESTLIB)/test
 
 # Enable this for SGI systems
 ARCHPATH=:$(DESTLIB)/sgi
diff --git a/Modules/Setup.irix5 b/Modules/Setup.irix5
index d30f19e5e5d..8d8be4a65da 100644
--- a/Modules/Setup.irix5
+++ b/Modules/Setup.irix5
@@ -31,7 +31,7 @@
 DESTLIB=$(prefix)/lib/python
 
 # Standard enabled (tests are always available)
-TESTPATH=$(DESTLIB)/test
+TESTPATH=:$(DESTLIB)/test
 
 # Enable this for SGI systems
 ARCHPATH=:$(DESTLIB)/sgi