diff --git a/all.sas b/all.sas
index 766e48e..8186e58 100644
--- a/all.sas
+++ b/all.sas
@@ -5158,8 +5158,7 @@ create table &outds (rename=(
   @li mf_getvartype.sas
 
   @param [in] libds dataset to hash
-  @param [in] salt= Provide a salt (could be, for instance, the name of the
-    dataset). Max 32 chars.
+  @param [in] salt= Provide a salt (could be, for instance, the dataset name)
   @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
   will contain one column (hashkey) with one observation (a hex32.
   representation of the input hash)
@@ -5194,7 +5193,7 @@ create table &outds (rename=(
     %let varlist=%mf_getvarlist(&libds);
     data &outds(rename=(&keyvar=hashkey) keep=&keyvar);
       length &prevkeyvar &keyvar $32;
-      retain &prevkeyvar "&salt";
+      retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
       set &libds end=&lastvar;
       /* hash should include previous row */
       &keyvar=put(md5(&prevkeyvar
diff --git a/base/mp_hashdataset.sas b/base/mp_hashdataset.sas
index 1c05059..c138b8b 100644
--- a/base/mp_hashdataset.sas
+++ b/base/mp_hashdataset.sas
@@ -20,8 +20,7 @@
   @li mf_getvartype.sas
 
   @param [in] libds dataset to hash
-  @param [in] salt= Provide a salt (could be, for instance, the name of the
-    dataset). Max 32 chars.
+  @param [in] salt= Provide a salt (could be, for instance, the dataset name)
   @param [out] outds= (work.mf_hashdataset) The output dataset to create. This
   will contain one column (hashkey) with one observation (a hex32.
   representation of the input hash)
@@ -56,7 +55,7 @@
     %let varlist=%mf_getvarlist(&libds);
     data &outds(rename=(&keyvar=hashkey) keep=&keyvar);
       length &prevkeyvar &keyvar $32;
-      retain &prevkeyvar "&salt";
+      retain &prevkeyvar "%sysfunc(md5(%str(&salt)),$hex32.)";
       set &libds end=&lastvar;
       /* hash should include previous row */
       &keyvar=put(md5(&prevkeyvar