diff --git a/grub-core/lib/i386/backtrace.c b/grub-core/lib/i386/backtrace.c
index d76a46a23..c3e03c727 100644
--- a/grub-core/lib/i386/backtrace.c
+++ b/grub-core/lib/i386/backtrace.c
@@ -57,10 +57,10 @@ grub_backtrace (void)
 {
 #ifdef __x86_64__
   asm volatile ("movq %%rbp, %%rdi\n"
-		"call %%rax": :"a"(grub_backtrace_pointer));
+		"callq *%%rax": :"a"(grub_backtrace_pointer));
 #else
   asm volatile ("movl %%ebp, %%eax\n"
-		"call %%ecx": :"c"(grub_backtrace_pointer));
+		"calll *%%ecx": :"c"(grub_backtrace_pointer));
 #endif
 }