diff --git a/src/util/arch/common/popcount.h b/src/util/arch/common/popcount.h
index 0bd1e837..ef5776e8 100644
--- a/src/util/arch/common/popcount.h
+++ b/src/util/arch/common/popcount.h
@@ -53,8 +53,8 @@ u32 popcount64_impl_c(u64a x) {
     return (x * 0x0101010101010101) >> 56;
 #else
     // Synthesise from two 32-bit cases.
-    return popcount32_impl(x >> 32) + popcount32_impl(x);
+    return popcount32_impl_c(x >> 32) + popcount32_impl_c(x);
 #endif
 }
 
-#endif // POPCOUNT_ARCH_COMMON_H
\ No newline at end of file
+#endif // POPCOUNT_ARCH_COMMON_H
diff --git a/src/util/popcount.h b/src/util/popcount.h
index 932fc2cf..5fd6dc33 100644
--- a/src/util/popcount.h
+++ b/src/util/popcount.h
@@ -39,6 +39,10 @@
 
 #if defined(ARCH_IA32) || defined(ARCH_X86_64)
 #include "util/arch/x86/popcount.h"
+#else
+#include "util/arch/common/popcount.h"
+#define popcount32_impl(x) popcount32_impl_c(x)
+#define popcount64_impl(x) popcount64_impl_c(x)
 #endif
 
 static really_inline