diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index fdbfcec2b0..0795c4cc06 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -931,7 +931,7 @@ struct ARMCPU {
     uint64_t midr;
     uint32_t revidr;
     uint32_t reset_fpsid;
-    uint32_t ctr;
+    uint64_t ctr;
     uint32_t reset_sctlr;
     uint64_t pmceid0;
     uint64_t pmceid1;