diff --git a/language.version b/language.version
index 0656e642c..9611acc09 100644
--- a/language.version
+++ b/language.version
@@ -1,3 +1,3 @@
 [default]
-SWWM_MODVER="\chSWWM \czGZ\c- \cw0.9.11b-pre r452 \cu(Sat 24 Apr 16:00:14 CEST 2021)\c-";
-SWWM_SHORTVER="\cw0.9.11b-pre r452 \cu(2021-04-24 16:00:14)\c-";
+SWWM_MODVER="\chSWWM \czGZ\c- \cw0.9.11b-pre r454 \cu(Sat 24 Apr 16:13:37 CEST 2021)\c-";
+SWWM_SHORTVER="\cw0.9.11b-pre r454 \cu(2021-04-24 16:13:37)\c-";
diff --git a/zscript/utility/swwm_utility.zsc b/zscript/utility/swwm_utility.zsc
index 740aca54f..939538da4 100644
--- a/zscript/utility/swwm_utility.zsc
+++ b/zscript/utility/swwm_utility.zsc
@@ -1037,7 +1037,7 @@ Class SWWMUtility
 		if ( !(flags&DE_NOSPLASH) ) Source.CheckSplash(ExplosionRadius);
 		double brange = 1./(ExplosionRadius-FullDamageRadius);
 		Actor Instigator = (flags&DE_NOTMISSILE)?Source:Source.target;
-		BlockThingsIterator bi = BlockThingsIterator.Create(Source,ExplosionRadius*2);	// test with doubled radius, just to be sure
+		BlockThingsIterator bi = BlockThingsIterator.Create(Source,ExplosionRadius);
 		int nhit = 0, nkill = 0;
 		while ( bi.Next() )
 		{