diff --git a/Source/cudaSDR.pro b/Source/cudaSDR.pro
index aa4dc4c..bed548e 100644
--- a/Source/cudaSDR.pro
+++ b/Source/cudaSDR.pro
@@ -1,4 +1,7 @@
 QT += core gui network multimedia opengl
+QMAKE_CFLAGS_RELEASE = -O4
+QMAKE_CXXFLAGS_RELEASE = -O4
+QMAKE_LFLAGS_RELEASE = -O4
 
 TARGET = cudaSDR
 TEMPLATE = app