diff --git a/src/system/kernel/lib/arch/x86/Jamfile b/src/system/kernel/lib/arch/x86/Jamfile
index 3d0c3ff173..4f572bb40c 100644
--- a/src/system/kernel/lib/arch/x86/Jamfile
+++ b/src/system/kernel/lib/arch/x86/Jamfile
@@ -33,3 +33,8 @@ KernelMergeObject kernel_lib_posix_arch_$(TARGET_ARCH).o :
 
 	: $(TARGET_KERNEL_PIC_CCFLAGS)
 ;
+
+# Explicitly tell the build system that arch_string.S includes the generated
+# asm_offsets.h.
+Includes [ FGristFiles arch_string.S ]
+	: <src!system!kernel!arch!x86>asm_offsets.h ;