diff --git a/DDG4/src/Geant4InputAction.cpp b/DDG4/src/Geant4InputAction.cpp
index 6ba2f36d286f3732c0ecb04c057a08b6d217af7c..ea852a26aca6968f3e2db96a4f38af9c1909bb8e 100644
--- a/DDG4/src/Geant4InputAction.cpp
+++ b/DDG4/src/Geant4InputAction.cpp
@@ -100,7 +100,7 @@ int Geant4InputAction::readParticles(int evt_number, std::vector<Particle*>& par
   int evid = evt_number + m_firstEvent;
   if ( 0 == m_reader )  {
     if ( m_input.empty() )  {
-      throw runtime_error("InputAction: No inoput file declared!");
+      throw runtime_error("InputAction: No input file declared!");
     }
     string err;
     TypeName tn = TypeName::split(m_input,"|");