diff --git a/mkclean/pkg.sh.in b/mkclean/pkg.sh.in
index 54ebacd4..6342a851 100644
--- a/mkclean/pkg.sh.in
+++ b/mkclean/pkg.sh.in
@@ -4,6 +4,6 @@ set -e
 
 echo "Generate the source package for @PROJECT_NAME@-@PROJECT_VERSION@"
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@
-../corec/tools/branch/branch src.br
+@CMAKE_CURRENT_SOURCE_DIR@/../corec/tools/branch/branch.py src.br
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2
 tar cvfj @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2 @PROJECT_NAME@-@PROJECT_VERSION@
diff --git a/mkparts/pkg.sh.in b/mkparts/pkg.sh.in
index 54ebacd4..6342a851 100644
--- a/mkparts/pkg.sh.in
+++ b/mkparts/pkg.sh.in
@@ -4,6 +4,6 @@ set -e
 
 echo "Generate the source package for @PROJECT_NAME@-@PROJECT_VERSION@"
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@
-../corec/tools/branch/branch src.br
+@CMAKE_CURRENT_SOURCE_DIR@/../corec/tools/branch/branch.py src.br
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2
 tar cvfj @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2 @PROJECT_NAME@-@PROJECT_VERSION@
diff --git a/mkvalidator/pkg.sh.in b/mkvalidator/pkg.sh.in
index 54ebacd4..6342a851 100644
--- a/mkvalidator/pkg.sh.in
+++ b/mkvalidator/pkg.sh.in
@@ -4,6 +4,6 @@ set -e
 
 echo "Generate the source package for @PROJECT_NAME@-@PROJECT_VERSION@"
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@
-../corec/tools/branch/branch src.br
+@CMAKE_CURRENT_SOURCE_DIR@/../corec/tools/branch/branch.py src.br
 rm -rf @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2
 tar cvfj @PROJECT_NAME@-@PROJECT_VERSION@.tar.bz2 @PROJECT_NAME@-@PROJECT_VERSION@