diff --git a/src/backend/replication/logical/logicalfuncs.c b/src/backend/replication/logical/logicalfuncs.c
index a3a58e6..310b1e5 100644
--- a/src/backend/replication/logical/logicalfuncs.c
+++ b/src/backend/replication/logical/logicalfuncs.c
@@ -394,14 +394,14 @@ pg_logical_slot_get_changes_guts(FunctionCallInfo fcinfo, bool confirm, bool bin
 		MemoryContextSwitchTo(oldcontext);
 
 		/*
-		 * Check whether the output pluggin writes textual output if that's
+		 * Check whether the output plugin writes textual output if that's
 		 * what we need.
 		 */
 		if (!binary &&
 			ctx->options.output_type != OUTPUT_PLUGIN_TEXTUAL_OUTPUT)
 			ereport(ERROR,
 					(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-					 errmsg("output plugin cannot produce binary output")));
+					 errmsg("binary output plugin cannot produce textual output")));
 
 		ctx->output_writer_private = p;
 
diff --git a/src/include/catalog/objectaccess.h b/src/include/catalog/objectaccess.h
index 4fdd056..1e1cb13 100644
--- a/src/include/catalog/objectaccess.h
+++ b/src/include/catalog/objectaccess.h
@@ -13,7 +13,7 @@
 /*
  * Object access hooks are intended to be called just before or just after
  * performing certain actions on a SQL object.  This is intended as
- * infrastructure for security or logging pluggins.
+ * infrastructure for security or logging plugins.
  *
  * OAT_POST_CREATE should be invoked just after the object is created.
  * Typically, this is done after inserting the primary catalog records and