diff --git a/pano_interface_1.pro b/pano_interface_1.pro
index 773163efc605c3fae2a525fd5a01aa292cc1f9ea..23fa05b836a253c36e944724a1e5f6c9d5fb82f8 100644
--- a/pano_interface_1.pro
+++ b/pano_interface_1.pro
@@ -37,8 +37,8 @@ LIBS += -lglew32s -lfreeglut -lglu32 -lopengl32 -llibnetpbm10
 }
 
 # compiler specific settings
-darwin-g++|macx-g++|linux-g++|win32-g++|cygwin-g++ {
-QMAKE_CXXFLAGS=-ansi -pedantic -Wno-long-long
+darwin-g++*|macx-g++*|linux-g++*|win32-g++*|cygwin-g++* {
+QMAKE_CXXFLAGS += -ansi -pedantic -Wno-long-long
 }
 win32-msvc2003|win32-msvc2005|win32-msvc2008|win32-msvc2010|win32-msvc2012 {
 DEFINES += _CRT_SECURE_NO_WARNINGS