diff --git a/src/tools/msvc/vcregress.pl b/src/tools/msvc/vcregress.pl
index 61963836157..1a0ae67d0a3 100644
--- a/src/tools/msvc/vcregress.pl
+++ b/src/tools/msvc/vcregress.pl
@@ -50,7 +50,7 @@ copy("$Config/autoinc/autoinc.dll",               "src/test/regress");
 copy("$Config/regress/regress.dll",               "src/test/regress");
 copy("$Config/dummy_seclabel/dummy_seclabel.dll", "src/test/regress");
 
-$ENV{PATH} = "$topdir/$Config/libpq;$topdir/$Config/libpq;$ENV{PATH}";
+$ENV{PATH} = "$topdir/$Config/libpq;$ENV{PATH}";
 
 my $schedule = shift;
 unless ($schedule)