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-rw-r--r--Src/params.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Src/params.c b/Src/params.c
index ac7f084bd..5c4d61e69 100644
--- a/Src/params.c
+++ b/Src/params.c
@@ -2174,7 +2174,8 @@ stdunsetfn(Param pm, int exp)
     switch (PM_TYPE(pm->flags)) {
 	case PM_SCALAR: pm->sets.cfn(pm, NULL); break;
 	case PM_ARRAY:  pm->sets.afn(pm, NULL); break;
-        case PM_HASHED: pm->sets.hfn(pm, NULL); break;
+	case PM_HASHED: pm->sets.hfn(pm, NULL); break;
+	default: pm->u.str = NULL; break;
     }
     pm->flags |= PM_UNSET;
 }