diff --git a/plugins/channeltx/modam/modam.pro b/plugins/channeltx/modam/modam.pro
index b2fe8b5b8..02d6ece06 100644
--- a/plugins/channeltx/modam/modam.pro
+++ b/plugins/channeltx/modam/modam.pro
@@ -13,6 +13,8 @@ TARGET = modam
 INCLUDEPATH += $$PWD
 INCLUDEPATH += ../../../sdrbase
 
+DEFINES += USE_SIMD=1
+
 CONFIG(Release):build_subdir = release
 CONFIG(Debug):build_subdir = debug
 
diff --git a/sdrbase/sdrbase.pro b/sdrbase/sdrbase.pro
index 1653d3ddb..efe6c36a6 100644
--- a/sdrbase/sdrbase.pro
+++ b/sdrbase/sdrbase.pro
@@ -14,6 +14,7 @@ INCLUDEPATH += $$PWD
 DEFINES += USE_KISSFFT=1
 DEFINES += __WINDOWS__=1
 DEFINES += DSD_USE_SERIALDV=1
+DEFINES += USE_SIMD=1
 
 CONFIG(Release):build_subdir = release
 CONFIG(Debug):build_subdir = debug