diff --git a/code/game/objects/explosion.dm b/code/game/objects/explosion.dm
index 07ffe61689..11079bf847 100644
--- a/code/game/objects/explosion.dm
+++ b/code/game/objects/explosion.dm
@@ -1,10 +1,15 @@
-/proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, adminlog = 1, ignorecap = 0, flame_range = 0 ,silent = 0, smoke = 1)
+/proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, adminlog = 1, ignorecap = 0, flame_range, silent = 0, smoke = 1)
 	set waitfor = 0
 	src = null //so we don't abort once src is deleted
 	epicenter = get_turf(epicenter)
 	if(!epicenter)
 		return
 
+	if(isnull(flame_range))
+		flame_range = light_impact_range
+	if(isnull(flash_range))
+		flash_range = devastation_range
+
 	// Archive the uncapped explosion for the doppler array
 	var/orig_dev_range = devastation_range
 	var/orig_heavy_range = heavy_impact_range