diff --git a/src/arch/arm/pmu.cc b/src/arch/arm/pmu.cc
index 6ea053e552..39530702c4 100644
--- a/src/arch/arm/pmu.cc
+++ b/src/arch/arm/pmu.cc
@@ -574,8 +574,6 @@ PMU::CounterState::add(uint64_t delta)
     const uint64_t msb(1ULL << (overflow64 ? 63 : 31));
     const uint64_t old_value(value);
 
-    assert(delta > 0);
-
     value += delta;
 
     // Overflow if the msb goes from 1 to 0