diff --git a/tdutils/td/utils/bits.h b/tdutils/td/utils/bits.h
index 25c26864..70ebde63 100644
--- a/tdutils/td/utils/bits.h
+++ b/tdutils/td/utils/bits.h
@@ -127,7 +127,11 @@ inline uint64 bswap64(uint64 x) {
 }
 
 inline int32 count_bits32(uint32 x) {
-  return __popcnt(x);
+  x -= (x >> 1) & 0x55555555;
+  x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
+  x = (x + (x >> 4)) & 0x0F0F0F0F;
+  x += x >> 8;
+  return (x + (x >> 16)) & 0x3F;
 }
 
 inline int32 count_bits64(uint64 x) {
@@ -197,11 +201,15 @@ inline uint64 bswap64(uint64 x) {
 }
 
 inline int32 count_bits32(uint32 x) {
-  return _popcnt32(static_cast<int>(x));
+  x -= (x >> 1) & 0x55555555;
+  x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
+  x = (x + (x >> 4)) & 0x0F0F0F0F;
+  x += x >> 8;
+  return (x + (x >> 16)) & 0x3F;
 }
 
 inline int32 count_bits64(uint64 x) {
-  return _popcnt64(static_cast<__int64>(x));
+  return count_bits32(static_cast<uint32>(x >> 32)) + count_bits32(static_cast<uint32>(x));
 }
 
 #else