diff --git a/src/commands.cc b/src/commands.cc
index db2dc168..8448569d 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -1445,8 +1445,10 @@ const CommandDesc debug_cmd = {
             }
             write_to_debug_buffer({});
             write_to_debug_buffer(format("  Total: {}", total));
-            #if defined(__GLIBC__) || defined(__CYGWIN__)
+            #if defined(__GLIBC__) && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 33))
             write_to_debug_buffer(format("  Malloced: {}", mallinfo2().uordblks));
+            #else if defined(__GLIBC__) || defined(__CYGWIN__)
+            write_to_debug_buffer(format("  Malloced: {}", mallinfo().uordblks));
             #endif
         }
         else if (parser[0] == "shared-strings")