diff --git a/all.sas b/all.sas
index a3b9ec9..1f9be56 100644
--- a/all.sas
+++ b/all.sas
@@ -13523,6 +13523,7 @@ run;
 
 %let ds5=%upcase(work.%mf_getuniquename(prefix=mpsd_merged));
 data &ds5;
+  length key_hash $32;
   merge &ds3 &ds4;
   by key_hash;
   if not missing(key_hash);
diff --git a/base/mp_stripdiffs.sas b/base/mp_stripdiffs.sas
index 5002818..29c6853 100644
--- a/base/mp_stripdiffs.sas
+++ b/base/mp_stripdiffs.sas
@@ -138,6 +138,7 @@ run;
 
 %let ds5=%upcase(work.%mf_getuniquename(prefix=mpsd_merged));
 data &ds5;
+  length key_hash $32;
   merge &ds3 &ds4;
   by key_hash;
   if not missing(key_hash);