diff --git a/src/hotspot/cpu/aarch64/aarch64.ad b/src/hotspot/cpu/aarch64/aarch64.ad
index 40b57e7fb85..119367578a9 100644
--- a/src/hotspot/cpu/aarch64/aarch64.ad
+++ b/src/hotspot/cpu/aarch64/aarch64.ad
@@ -3866,7 +3866,7 @@ encode %{
 
     // Handle existing monitor.
     __ ldr(tmp, Address(oop, oopDesc::mark_offset_in_bytes()));
-    __ tbnz(disp_hdr, exact_log2(markWord::monitor_value), object_has_monitor);
+    __ tbnz(tmp, exact_log2(markWord::monitor_value), object_has_monitor);
 
     if (!UseHeavyMonitors) {
       // Check if it is still a light weight lock, this is is true if we
diff --git a/src/hotspot/cpu/riscv/riscv.ad b/src/hotspot/cpu/riscv/riscv.ad
index 75612ef7508..abe0f609a62 100644
--- a/src/hotspot/cpu/riscv/riscv.ad
+++ b/src/hotspot/cpu/riscv/riscv.ad
@@ -2474,7 +2474,7 @@ encode %{
 
     // Handle existing monitor.
     __ ld(tmp, Address(oop, oopDesc::mark_offset_in_bytes()));
-    __ andi(t0, disp_hdr, markWord::monitor_value);
+    __ andi(t0, tmp, markWord::monitor_value);
     __ bnez(t0, object_has_monitor);
 
     if (!UseHeavyMonitors) {