diff --git a/sdrbase/dsp/downchannelizer.cpp b/sdrbase/dsp/downchannelizer.cpp
index fc98bac1a..c9ea12c8e 100644
--- a/sdrbase/dsp/downchannelizer.cpp
+++ b/sdrbase/dsp/downchannelizer.cpp
@@ -16,6 +16,8 @@
// along with this program. If not, see . //
///////////////////////////////////////////////////////////////////////////////////
+#include
+
#include
#include
diff --git a/sdrbase/dsp/upchannelizer.cpp b/sdrbase/dsp/upchannelizer.cpp
index dcb5c1972..5060a3fcb 100644
--- a/sdrbase/dsp/upchannelizer.cpp
+++ b/sdrbase/dsp/upchannelizer.cpp
@@ -16,6 +16,7 @@
// along with this program. If not, see . //
///////////////////////////////////////////////////////////////////////////////////
+#include
#include
#include