diff --git a/src/external/external.pro b/src/external/external.pro
index 0d9a1cf08..8dd66b3ab 100644
--- a/src/external/external.pro
+++ b/src/external/external.pro
@@ -6,4 +6,4 @@ SUBDIRS       = lib3ds-1.3.0/lib3ds \
                 bzip2-1.0.5/bzip2-1.0.5.pro \
                 muparser_v132/src \
                 levmar-2.3/levmar-2.3.pro \
-				structuresynth/structuresynth.pro
\ No newline at end of file
+                structuresynth/structuresynth.pro \