diff --git a/stand/forth/menu-commands.4th b/stand/forth/menu-commands.4th
index decf3fdf6fa..8121272114d 100644
--- a/stand/forth/menu-commands.4th
+++ b/stand/forth/menu-commands.4th
@@ -127,7 +127,6 @@ also menu-namespace also menu-command-helpers
 	s" set hw.ata.ata_dma=0" evaluate
 	s" set hw.ata.atapi_dma=0" evaluate
 	s" set hw.ata.wc=0" evaluate
-	s" set hw.eisa_slots=0" evaluate
 	s" set kern.eventtimer.periodic=1" evaluate
 	s" set kern.geom.part.check_integrity=0" evaluate
 ;
@@ -137,7 +136,6 @@ also menu-namespace also menu-command-helpers
 	s" hw.ata.ata_dma" unsetenv
 	s" hw.ata.atapi_dma" unsetenv
 	s" hw.ata.wc" unsetenv
-	s" hw.eisa_slots" unsetenv
 	s" kern.eventtimer.periodic" unsetenv
 	s" kern.geom.part.check_integrity" unsetenv
 ;
diff --git a/stand/lua/core.lua b/stand/lua/core.lua
index f4a2815769c..4c121319eb3 100644
--- a/stand/lua/core.lua
+++ b/stand/lua/core.lua
@@ -177,7 +177,6 @@ function core.setSafeMode(safe_mode)
 		loader.setenv("hw.ata.ata_dma", "0")
 		loader.setenv("hw.ata.atapi_dma", "0")
 		loader.setenv("hw.ata.wc", "0")
-		loader.setenv("hw.eisa_slots", "0")
 		loader.setenv("kern.eventtimer.periodic", "1")
 		loader.setenv("kern.geom.part.check_integrity", "0")
 	else
@@ -185,7 +184,6 @@ function core.setSafeMode(safe_mode)
 		loader.unsetenv("hw.ata.ata_dma")
 		loader.unsetenv("hw.ata.atapi_dma")
 		loader.unsetenv("hw.ata.wc")
-		loader.unsetenv("hw.eisa_slots")
 		loader.unsetenv("kern.eventtimer.periodic")
 		loader.unsetenv("kern.geom.part.check_integrity")
 	end
diff --git a/stand/lua/core.lua.8 b/stand/lua/core.lua.8
index 61eab6fe24f..f0f27ee5ae1 100644
--- a/stand/lua/core.lua.8
+++ b/stand/lua/core.lua.8
@@ -127,7 +127,6 @@ Sets or unsets
 .Ev hw.ata.ata_dma ,
 .Ev hw.ata.atapi_dma ,
 .Ev hw.ata.wc ,
-.Ev hw.eisa_slots ,
 .Ev kern.eventtimer.periodic ,
 and
 .Ev kern.geom.part.check_integrity .