diff --git a/src/debug/ParticleDebug.cpp b/src/debug/ParticleDebug.cpp
index 8155f87da..7fb4e3b13 100644
--- a/src/debug/ParticleDebug.cpp
+++ b/src/debug/ParticleDebug.cpp
@@ -84,6 +84,8 @@ bool ParticleDebug::KeyPress(int key, Uint16 character, bool shift, bool ctrl, b
 		}
 		else
 		{
+			if (ctrl)
+				return true;
 			if (sim->debug_currentParticle > 0)
 			{
 				sim->UpdateParticles(sim->debug_currentParticle, NPART);