diff --git a/tools/make-extra-dist.sh b/tools/make-extra-dist.sh
index 63e0a38e0230aa2a5b339a8abcb91c5465b5d964..94598810eea8e007073c42646cd8d26c83bd7863 100755
--- a/tools/make-extra-dist.sh
+++ b/tools/make-extra-dist.sh
@@ -26,7 +26,7 @@ then
 	exit 2
 fi
 
-DESTDIR=${INSTALL_DIR:-release}
+DESTDIR=${INSTALL_DIR:-release-$$}
 TARGET="`echo $1 | sed 's:/*$::'`"
 VERSION=$2
 ARCH=$3
diff --git a/tools/make-main-dist.sh b/tools/make-main-dist.sh
index c11567fe9f422231c4ef52b0cb465861de0f5ce5..320490dd3e10945bd19886003a50c87bcab08412 100755
--- a/tools/make-main-dist.sh
+++ b/tools/make-main-dist.sh
@@ -28,7 +28,7 @@ then
 	exit 2
 fi
 
-DESTDIR=${INSTALL_DIR:-release}
+DESTDIR=${INSTALL_DIR:-release-$$}
 MANDIR=${MANDIR:-man/man1}
 TARGET="`echo $1 | sed 's:/*$::'`"
 VERSION=$2