diff --git a/plugins/channeltx/modam/modam.pro b/plugins/channeltx/modam/modam.pro
index e33564037..35b6413b1 100644
--- a/plugins/channeltx/modam/modam.pro
+++ b/plugins/channeltx/modam/modam.pro
@@ -10,12 +10,15 @@ CONFIG += plugin
 QT += core gui widgets multimedia
 
 TARGET = modam
-INCLUDEPATH += $$PWD
-INCLUDEPATH += ../../../sdrbase
 
+DEFINES += USE_SSE2=1
+QMAKE_CXXFLAGS += -msse2
 DEFINES += USE_SSE4_1=1
 QMAKE_CXXFLAGS += -msse4.1
 
+INCLUDEPATH += $$PWD
+INCLUDEPATH += ../../../sdrbase
+
 CONFIG(Release):build_subdir = release
 CONFIG(Debug):build_subdir = debug