diff --git a/jlibrary/system/main/stdlib.ijs b/jlibrary/system/main/stdlib.ijs
index d080c4e7f..913f275ca 100644
--- a/jlibrary/system/main/stdlib.ijs
+++ b/jlibrary/system/main/stdlib.ijs
@@ -529,11 +529,10 @@ memu=: '' 1 : 'try. 15!:15 m catch. a: { ] return. end. 15!:15'
 cdf=: 15!:5
 cder=: 15!:10
 cderx=: 15!:11
-symget=: 15!:6
 symset=: 15!:7
 symdad=: 15!:14
 symdat=: 15!:14
-symhad=: 15!:12
+memhad=: 15!:12
 cdcb=: 15!:13
 JB01=: 1
 JCHAR=: 2
diff --git a/test/g000.ijs b/test/g000.ijs
index 699152f2a..fe566bb01 100644
--- a/test/g000.ijs
+++ b/test/g000.ijs
@@ -3,7 +3,7 @@ prolog './g000.ijs'
 NB. Early in the testing, verify that local assignments relocate the symbol table correctly
 3 : 0 ''
 st =. 0
-st =. 15!:_1 <'st'
+st =. 15!:12 <'st'
 for_l1. 'abcdefghijklmnopqrstuvwxyz' do.
   for_l2. 'abcdefghijklmnopqrstuvwxyz' do.
     (l1,l2) =. 26 #: l1_index,l2_index
@@ -14,7 +14,7 @@ for_l1. 'abcdefghijklmnopqrstuvwxyz' do.
     assert (l1,l2)~ = 26 #: l1_index,l2_index
   end.
 end.
-est =. 15!:_1 <'st'
+est =. 15!:12 <'st'
 NB. This relocates when run early  if. st ~: est do. smoutput 'symbols relocated' end.
 1
 )
diff --git a/test/g15x.ijs b/test/g15x.ijs
index 69e576ddf..24e11dd85 100644
--- a/test/g15x.ijs
+++ b/test/g15x.ijs
@@ -17,14 +17,14 @@ t=: 100 4 1?@$ 0
 t -: ($t)$15!:1 (15!:14 <'t'),0,(*/$t),3!:0 t
 (15!:14 <'t') = (15!:12 <'t') +10*SZI
 
-'domain error' -: 15!:_1  etx <'test'
-'domain error' -: 15!:_1  etx ;:'t test'
-'domain error' -: 15!:_1  etx <u:'test'
-'domain error' -: 15!:_1  etx u:&.> ;:'t test'
-'domain error' -: 15!:_1  etx <10&u:'test'
-'domain error' -: 15!:_1  etx 10&u:&.> ;:'t test'
-'domain error' -: 15!:_1  etx s:@<"0&.> <'test'
-'domain error' -: 15!:_1  etx <"0@s: <'test'
+'domain error' -: 15!:12  etx <'test'
+'domain error' -: 15!:12  etx ;:'t test'
+'domain error' -: 15!:12  etx <u:'test'
+'domain error' -: 15!:12  etx u:&.> ;:'t test'
+'domain error' -: 15!:12  etx <10&u:'test'
+'domain error' -: 15!:12  etx 10&u:&.> ;:'t test'
+'domain error' -: 15!:12  etx s:@<"0&.> <'test'
+'domain error' -: 15!:12  etx <"0@s: <'test'
 'domain error' -: 15!:14 etx <'test'
 'domain error' -: 15!:14 etx ;:'t test'
 'domain error' -: 15!:14 etx <u:'test'
@@ -34,8 +34,8 @@ t -: ($t)$15!:1 (15!:14 <'t'),0,(*/$t),3!:0 t
 'domain error' -: 15!:14 etx s:@<"0&.> <'test'
 'domain error' -: 15!:14 etx <"0@s: <'test'
 
-'value error'  -: 15!:_1  etx <'undefinedname'
-'value error'  -: 15!:_1  etx ;:'t undefinedname'
+'value error'  -: 15!:12  etx <'undefinedname'
+'value error'  -: 15!:12  etx ;:'t undefinedname'
 'value error'  -: 15!:14 etx <'undefinedname'
 'value error'  -: 15!:14 etx ;:'t undefinedname'
 
diff --git a/test/g3x6.ijs b/test/g3x6.ijs
index 7535cd18d..dab376521 100644
--- a/test/g3x6.ijs
+++ b/test/g3x6.ijs
@@ -31,7 +31,7 @@ m1=: mean f.
 m1=: 'mean' f.
 (5!:5 <'m1') -: 'mean'
 
-'domain error' -: 15!:_1 etx <'mean'
+'domain error' -: 15!:12 etx <'mean'
 
 1!:55 f
 
@@ -55,7 +55,7 @@ m1=: mean f.
 m1=: 'mean' f.
 (5!:5 <'m1') -: 'mean'
 
-'domain error' -: 15!:_1 etx <'mean'
+'domain error' -: 15!:12 etx <'mean'