diff --git a/io/inc/via-global-signals.hpp b/io/inc/via-global-signals.hpp
index 837fc0d..a7ffe01 100755
--- a/io/inc/via-global-signals.hpp
+++ b/io/inc/via-global-signals.hpp
@@ -23,10 +23,10 @@ class ViaControls {
 
 	//@{
 	/// Circular buffers used for boxcar averaging.
-	longBuffer knob1Buffer;
-	longBuffer knob2Buffer;
-	longBuffer knob3Buffer;
-	longBuffer cv1Buffer;
+	longBuffer knob1Buffer = {};
+	longBuffer knob2Buffer = {};
+	longBuffer knob3Buffer = {};
+	longBuffer cv1Buffer = {};
 	//@}
 
 //@{
diff --git a/modules/inc/sync.hpp b/modules/inc/sync.hpp
index 25c04d8..5c93fed 100755
--- a/modules/inc/sync.hpp
+++ b/modules/inc/sync.hpp
@@ -433,7 +433,7 @@ class ViaSync : public TARGET_VIA {
 	uint32_t clockDiv = 0;
 	uint32_t skipPll = 0;
 	int32_t pllNudge = 0;
-	buffer nudgeBuffer;
+	buffer nudgeBuffer = {};
 	int32_t nudgeSum = 0;
 
 	uint32_t phaseSignal = 0;
@@ -495,7 +495,7 @@ class ViaSync : public TARGET_VIA {
 
 	// average tap tempo
 	int32_t lastTap = 0;
-	buffer tapStore;
+	buffer tapStore = {};
 	int32_t tapSum = 0;
 
 	int32_t simultaneousTrigFlag = 0;