diff --git a/include/primops.s b/include/primops.s
index ec3c79c..f532144 100644
--- a/include/primops.s
+++ b/include/primops.s
@@ -11,7 +11,7 @@ _primops_s_file:
 .thunkcode \name
 	# push a thunk for collecting the first arg and set it as continuation
 	thunkto %rsi, $\name\()_fini, $2, %rbp, %rsi
-	enter 0x10(%rbp) # evaluate arg1
+	enter 020(%rbp) # evaluate arg1
 
 # arg1 -> | ret | cont |
 .thunkcode \name\()_fini
@@ -41,7 +41,7 @@ _primops_s_file:
 .thunkcode \name
 	# push a thunk for collecting the first arg and set it as continuation
 	thunkto %rsi, $\name\()_step1, $3, 030(%rbp), %rbp, %rsi
-	enter 0x10(%rbp) # evaluate arg1
+	enter 020(%rbp) # evaluate arg1
 
 # arg1 -> | arg2 | ret | cont |
 .thunkcode \name\()_step1