diff --git a/src/meshlabplugins/filter_isoparametrization/filter_isoparametrization.pro b/src/meshlabplugins/filter_isoparametrization/filter_isoparametrization.pro
index a2b47a3b1..9f30db4b3 100644
--- a/src/meshlabplugins/filter_isoparametrization/filter_isoparametrization.pro
+++ b/src/meshlabplugins/filter_isoparametrization/filter_isoparametrization.pro
@@ -29,6 +29,7 @@ INCLUDEPATH  += ./  \
 win32-msvc2005:QMAKE_CXXFLAGS   +=  /openmp -D_USE_OMP
 win32-msvc2008:QMAKE_CXXFLAGS   +=  /openmp -D_USE_OMP
 win32-g++:QMAKE_CXXFLAGS   +=  -fopenmp -D_USE_OMP
+win32-g++:QMAKE_LFLAGS += -fopenmp
 linux-g++:QMAKE_CXXFLAGS   +=  -fopenmp -D_USE_OMP
 macx:QMAKE_CXXFLAGS += -fopenmp -D_USE_OMP
 macx:QMAKE_LFLAGS += -fopenmp