diff --git a/lib/std/debug.zig b/lib/std/debug.zig
index 0dad04fae7..d035707a54 100644
--- a/lib/std/debug.zig
+++ b/lib/std/debug.zig
@@ -360,7 +360,7 @@ pub fn writeCurrentStackTraceWindows(
         return;
     } else 0;
     for (addrs[start_i..]) |addr| {
-        try printSourceAtAddress(debug_info, out_stream, addr, tty_config);
+        try printSourceAtAddress(debug_info, out_stream, addr - 1, tty_config);
     }
 }
 
@@ -412,7 +412,7 @@ fn printSourceAtAddressWindows(
         if (prefix.RecordLen < 2)
             return error.InvalidDebugInfo;
         switch (prefix.RecordKind) {
-            pdb.SymbolKind.S_LPROC32 => {
+            .S_LPROC32, .S_GPROC32 => {
                 const proc_sym = @ptrCast(*pdb.ProcSym, &mod.symbols[symbol_i + @sizeOf(pdb.RecordPrefix)]);
                 const vaddr_start = coff_section.header.virtual_address + proc_sym.CodeOffset;
                 const vaddr_end = vaddr_start + proc_sym.CodeSize;