diff --git a/src/evb/EVBApp.cpp b/src/evb/EVBApp.cpp
index 5951a7a..319ba7a 100644
--- a/src/evb/EVBApp.cpp
+++ b/src/evb/EVBApp.cpp
@@ -63,7 +63,7 @@ namespace EventBuilder {
 		m_params.workspaceDir = data["WorkspaceDir"].as<std::string>();
 		m_params.scalerFile = data["ScalerFile"].as<std::string>();
 		m_params.timeShiftFile = data["TimeShiftFile"].as<std::string>();
-		m_params.slowCoincidenceWindow = data["SlowCoincidenceWindow(ps)"].as<double>();
+		m_params.slowCoincidenceWindow = data["SlowCoincidenceWindow(ns)"].as<double>();
 		m_params.runMin = data["MinRun"].as<int>();
 		m_params.runMax = data["MaxRun"].as<int>();
 		m_params.bufferSize = data["BufferSize(hits)"].as<size_t>();
@@ -130,7 +130,7 @@ namespace EventBuilder {
 		yamlStream << YAML::Key << "WorkspaceDir" << YAML::Value << m_params.workspaceDir;
 		yamlStream << YAML::Key << "ScalerFile" << YAML::Value <<  m_params.scalerFile;
 		yamlStream << YAML::Key << "TimeShiftFile" << YAML::Value << m_params.timeShiftFile;
-		yamlStream << YAML::Key << "SlowCoincidenceWindow(ps)" << YAML::Value << m_params.slowCoincidenceWindow;
+		yamlStream << YAML::Key << "SlowCoincidenceWindow(ns)" << YAML::Value << m_params.slowCoincidenceWindow;
 		yamlStream << YAML::Key << "MinRun" << YAML::Value << m_params.runMin;
 		yamlStream << YAML::Key << "MaxRun" << YAML::Value << m_params.runMax;
 		yamlStream << YAML::Key << "BufferSize(hits)" << YAML::Value << m_params.bufferSize;
diff --git a/src/evb/EVBParameters.h b/src/evb/EVBParameters.h
index 8d22df3..19d096f 100644
--- a/src/evb/EVBParameters.h
+++ b/src/evb/EVBParameters.h
@@ -12,7 +12,7 @@ namespace EventBuilder {
 		int runMin = 0;
 		int runMax = 0;
 
-		double slowCoincidenceWindow = 3.0e6;
+		double slowCoincidenceWindow = 3.0e3;
         size_t bufferSize = 2000;
 	};
 }
diff --git a/src/guidict/EVBMainFrame.cpp b/src/guidict/EVBMainFrame.cpp
index ae39acc..30490ba 100644
--- a/src/guidict/EVBMainFrame.cpp
+++ b/src/guidict/EVBMainFrame.cpp
@@ -60,7 +60,7 @@ EVBMainFrame::EVBMainFrame(const TGWindow* p, UInt_t w, UInt_t h) :
 	NameFrame->AddFrame(ScalerFrame, fhints);
 
 	TGHorizontalFrame *WindowFrame = new TGHorizontalFrame(InputFrame, w, h*0.1);
-	TGLabel *slowlabel = new TGLabel(WindowFrame, "Slow Coincidence Window (ps):");
+	TGLabel *slowlabel = new TGLabel(WindowFrame, "Slow Coincidence Window (ns):");
 	fSlowWindowField = new TGNumberEntryField(WindowFrame, SLOWWIND, 0, TGNumberEntry::kNESReal, TGNumberEntry::kNEANonNegative);
 	TGLabel *buflabel = new TGLabel(WindowFrame, "Buffer Size (hits):");
 	fBufferSizeField = new TGNumberEntryField(WindowFrame, BUFSIZE, 200000, TGNumberEntry::kNESInteger, TGNumberEntry::kNEANonNegative);