diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2cd89b73b7..066512703a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-08-05  Tom de Vries  <tdevries@suse.de>
+
+	* gdbtypes.c (type_not_allocated, type_not_associated): Use
+	"prop->const_val () == 0" instead of "prop->const_val () != 0".
+
 2020-08-04  Simon Marchi  <simon.marchi@efficios.com>
 
 	* frame.h (frame_id_p): Return bool.
diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 0cd4b194d9..da1c58c65c 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -4134,7 +4134,7 @@ type_not_allocated (const struct type *type)
   struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type);
 
   return (prop != nullptr && prop->kind () == PROP_CONST
-	  && prop->const_val () != 0);
+	  && prop->const_val () == 0);
 }
 
 /* Associated status of type TYPE.  Return zero if type TYPE is associated.
@@ -4146,7 +4146,7 @@ type_not_associated (const struct type *type)
   struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type);
 
   return (prop != nullptr && prop->kind () == PROP_CONST
-	  && prop->const_val () != 0);
+	  && prop->const_val () == 0);
 }
 
 /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR.  */