diff --git a/src/meshlabplugins/meshio/meshio.pro b/src/meshlabplugins/meshio/meshio.pro
index 63481aa56..63e995334 100644
--- a/src/meshlabplugins/meshio/meshio.pro
+++ b/src/meshlabplugins/meshio/meshio.pro
@@ -13,7 +13,7 @@ unix{
 	QMAKE_CC	 = gcc-3.3
 	QMAKE_CXX	 = g++-3.3
 	QMAKE_LINK	 = gcc-3.3
-	CONFIG		+= debug warn_off
+	CONFIG		+= warn_off debug_and_release
 }
 
 
diff --git a/src/meshlabplugins/meshrender/meshrender.pro b/src/meshlabplugins/meshrender/meshrender.pro
index 47657ec66..775246c25 100644
--- a/src/meshlabplugins/meshrender/meshrender.pro
+++ b/src/meshlabplugins/meshrender/meshrender.pro
@@ -13,7 +13,7 @@ unix{
 	QMAKE_CC	 = gcc-3.3
 	QMAKE_CXX	 = g++-3.3
 	QMAKE_LINK	 = gcc-3.3
-	CONFIG		+= debug warn_off
+	CONFIG		+= warn_off debug_and_release
 }
 
 contains(TEMPLATE,lib) {
@@ -22,4 +22,4 @@ contains(TEMPLATE,lib) {
       else:TARGET = $$member(TARGET, 0)d
    }
 }
-QT           += opengl
\ No newline at end of file
+QT           += opengl