diff --git a/cuBQL/math/common.h b/cuBQL/math/common.h
index 0b462a6..7b51b7f 100644
--- a/cuBQL/math/common.h
+++ b/cuBQL/math/common.h
@@ -9,6 +9,7 @@
 #include <math.h> // using cmath causes issues under Windows
 
 #include <stdio.h>
+#include <inttypes.h>
 #include <iostream>
 #include <stdexcept>
 #include <memory>
@@ -396,17 +397,10 @@ namespace cuBQL {
   { printf("%f",f); return o; }
   inline __cubql_both dbgout operator<<(dbgout o, double f)
   { printf("%lf",f); return o; }
-#ifdef _WIN32
   inline __cubql_both dbgout operator<<(dbgout o, uint64_t i)
-  { printf("%llu",(unsigned long long)i); return o; }
+  { printf("%" PRIu64, i); return o; }
   inline __cubql_both dbgout operator<<(dbgout o, int64_t i)
-  { printf("%lli",(long long)i); return o; }
-#else
-  inline __cubql_both dbgout operator<<(dbgout o, uint64_t i)
-  { printf("%lu",i); return o; }
-  inline __cubql_both dbgout operator<<(dbgout o, int64_t i)
-  { printf("%li",i); return o; }
-#endif
+  { printf("%" PRId64, i); return o; }
   template <typename T>
   inline __cubql_both dbgout operator<<(dbgout o, T *ptr)
   { printf("%p",ptr); return o; }