diff --git a/src/src.pro b/src/src.pro
index eea200703..87b6815df 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -50,7 +50,7 @@ LIBS += -lm $${LIBZ_LIBS}
     isEmpty( QWT3D_INCLUDE ) { QWT3D_INCLUDE = $${QWT3D_INSTALL}/include }
     isEmpty( QWT3D_LIBS )    { QWT3D_LIBS    = $${QWT3D_INSTALL}/lib/libqwtplot3d.a }
     INCLUDEPATH += $${QWT3D_INCLUDE}
-    LIBS        += $${QWT3D_LIBS} -lGLU
+    LIBS        += $${QWT3D_LIBS}
     unix { LIBS += -lGLU }
     QT          += opengl
     DEFINES     += GC_HAVE_QWTPLOT3D