diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36d90c533..b33fc109e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -411,8 +411,8 @@ include_directories(
 
 if(USE_SIMD MATCHES SSE2)
     if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANGXX)
-        set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -msse2" )
-        set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -msse2" )
+        set( CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -msse4.1" )
+        set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -msse4.1" )
         add_definitions(-DUSE_SIMD)
     elseif(MSVC)
         set( CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /arch:SSE2" )
diff --git a/plugins/channeltx/modam/modam.pro b/plugins/channeltx/modam/modam.pro
index 02d6ece06..869ccd034 100644
--- a/plugins/channeltx/modam/modam.pro
+++ b/plugins/channeltx/modam/modam.pro
@@ -14,6 +14,7 @@ INCLUDEPATH += $$PWD
 INCLUDEPATH += ../../../sdrbase
 
 DEFINES += USE_SIMD=1
+QMAKE_CXXFLAGS += -msse4.1
 
 CONFIG(Release):build_subdir = release
 CONFIG(Debug):build_subdir = debug
diff --git a/sdrbase/sdrbase.pro b/sdrbase/sdrbase.pro
index efe6c36a6..aa27e93a5 100644
--- a/sdrbase/sdrbase.pro
+++ b/sdrbase/sdrbase.pro
@@ -15,6 +15,7 @@ DEFINES += USE_KISSFFT=1
 DEFINES += __WINDOWS__=1
 DEFINES += DSD_USE_SERIALDV=1
 DEFINES += USE_SIMD=1
+QMAKE_CXXFLAGS += -msse4.1
 
 CONFIG(Release):build_subdir = release
 CONFIG(Debug):build_subdir = debug