diff --git a/src/system/boot/arch/m68k/Jamfile b/src/system/boot/arch/m68k/Jamfile
index 26e9d2ad52..4e3359bded 100644
--- a/src/system/boot/arch/m68k/Jamfile
+++ b/src/system/boot/arch/m68k/Jamfile
@@ -23,17 +23,17 @@ BootMergeObject boot_arch_$(TARGET_KERNEL_ARCH).o :
 
 BootMergeObject boot_arch_m68k_030.o :
 	mmu_030.cpp
-	: -fno-pic -Wno-unused -m68030
+	: -fno-pic -Wno-unused -mcpu=68030
 ;
 
 BootMergeObject boot_arch_m68k_040.o :
 	mmu_040.cpp
-	: -fno-pic -Wno-unused -m68040
+	: -fno-pic -Wno-unused -mcpu=68040 -Wa,-m68040
 ;
 
 BootMergeObject boot_arch_m68k_060.o :
 	mmu_060.cpp
-	: -fno-pic -Wno-unused -m68060
+	: -fno-pic -Wno-unused -mcpu=68060
 ;
 
 SEARCH on [ FGristFiles arch_elf.cpp ]