diff --git a/runtime/src/vx_intrinsics.S b/runtime/src/vx_intrinsics.S
index 1e99c794..68f324e7 100644
--- a/runtime/src/vx_intrinsics.S
+++ b/runtime/src/vx_intrinsics.S
@@ -83,11 +83,11 @@ vx_num_cores:
 .type vx_num_cycles, @function
 .global vx_num_cycles
 vx_num_cycles:
-    csrr a0, CSR_CYCLE
+    csrr a0, CSR_MCYCLE
     ret
     
 .type vx_num_instrs, @function
 .global vx_num_instrs
 vx_num_instrs:
-    csrr a0, CSR_INSTRET
+    csrr a0, CSR_MINSTRET
     ret
\ No newline at end of file