diff --git a/sys/contrib/dev/acpica/components/parser/psargs.c b/sys/contrib/dev/acpica/components/parser/psargs.c
index f3f7015f52d..e0a18f6b1d4 100644
--- a/sys/contrib/dev/acpica/components/parser/psargs.c
+++ b/sys/contrib/dev/acpica/components/parser/psargs.c
@@ -672,6 +672,7 @@ AcpiPsGetNextField (
                 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP);
                 if (!Arg)
                 {
+                    AcpiPsFreeOp (Field);
                     return_PTR (NULL);
                 }
 
@@ -717,6 +718,7 @@ AcpiPsGetNextField (
             Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
             if (!Arg)
             {
+                AcpiPsFreeOp (Field);
                 return_PTR (NULL);
             }