diff --git a/src/kernel/boot/loader/Jamfile b/src/kernel/boot/loader/Jamfile
index 32c930f120..55ae686087 100644
--- a/src/kernel/boot/loader/Jamfile
+++ b/src/kernel/boot/loader/Jamfile
@@ -22,7 +22,7 @@ UsePrivateHeaders [ FDirName storage ] ;
 
 	defines = [ FDefines $(defines) ] ;
 	SubDirCcFlags $(defines) -Wall -Wno-multichar ;
-	SubDirC++Flags $(defines) -Wall -Wno-multichar ;
+	SubDirC++Flags $(defines) -Wall -Wno-multichar -fno-rtti ;
 }
 
 KernelStaticLibrary boot_loader :
diff --git a/src/kernel/boot/loader/file_systems/amiga_ffs/Jamfile b/src/kernel/boot/loader/file_systems/amiga_ffs/Jamfile
index 56cde20219..9219657e85 100644
--- a/src/kernel/boot/loader/file_systems/amiga_ffs/Jamfile
+++ b/src/kernel/boot/loader/file_systems/amiga_ffs/Jamfile
@@ -6,6 +6,8 @@ UsePrivateHeaders [ FDirName storage ] ;
 
 #SubDirHdrs $(OBOS_TOP) src add-ons kernel file_systems amiga_ffs ;
 
+SubDirC++Flags -fno-rtti ;
+
 KernelStaticLibrary boot_amiga_ffs :
 	amiga_ffs.cpp
 	Volume.cpp
diff --git a/src/kernel/boot/loader/file_systems/bfs/Jamfile b/src/kernel/boot/loader/file_systems/bfs/Jamfile
index 42b48eb13c..5754c51a3b 100644
--- a/src/kernel/boot/loader/file_systems/bfs/Jamfile
+++ b/src/kernel/boot/loader/file_systems/bfs/Jamfile
@@ -6,6 +6,8 @@ UsePrivateHeaders [ FDirName storage ] ;
 
 SubDirHdrs $(OBOS_TOP) src add-ons kernel file_systems bfs ;
 
+SubDirC++Flags -fno-rtti ;
+
 KernelStaticLibrary boot_bfs :
 	bfs.cpp
 	Directory.cpp
diff --git a/src/kernel/boot/platform/bios_ia32/Jamfile b/src/kernel/boot/platform/bios_ia32/Jamfile
index fdd528d6f1..9ace82e181 100644
--- a/src/kernel/boot/platform/bios_ia32/Jamfile
+++ b/src/kernel/boot/platform/bios_ia32/Jamfile
@@ -5,6 +5,8 @@ SubDirHdrs $(OBOS_TOP) headers private kernel boot platform $(OBOS_BOOT_PLATFORM
 UsePrivateHeaders [ FDirName kernel disk_device_manager ] ;
 UsePrivateHeaders [ FDirName storage ] ;
 
+SubDirC++Flags -fno-rtti ;
+
 KernelMergeObject boot_platform_bios_ia32.o :
 	<$(SOURCE_GRIST)>shell.S
 	<$(SOURCE_GRIST)>start.c
diff --git a/src/kernel/boot/platform/openfirmware/Jamfile b/src/kernel/boot/platform/openfirmware/Jamfile
index f6d3b02554..a4521bbae7 100644
--- a/src/kernel/boot/platform/openfirmware/Jamfile
+++ b/src/kernel/boot/platform/openfirmware/Jamfile
@@ -1,5 +1,7 @@
 SubDir OBOS_TOP src kernel boot platform openfirmware ;
 
+SubDirC++Flags -fno-rtti ;
+
 KernelMergeObject boot_platform_openfirmware.o :
 	<$(SOURCE_GRIST)>start.c
 	<$(SOURCE_GRIST)>openfirmware.c
diff --git a/src/kernel/boot/platform/openfirmware/arch/ppc/Jamfile b/src/kernel/boot/platform/openfirmware/arch/ppc/Jamfile
index 13bce5c677..c4e311209d 100644
--- a/src/kernel/boot/platform/openfirmware/arch/ppc/Jamfile
+++ b/src/kernel/boot/platform/openfirmware/arch/ppc/Jamfile
@@ -2,6 +2,8 @@ SubDir OBOS_TOP src kernel boot platform openfirmware arch ppc ;
 
 SubDirHdrs $(OBOS_TOP) src kernel boot platform $(OBOS_BOOT_PLATFORM) ;
 
+SubDirC++Flags -fno-rtti ;
+
 KernelStaticLibrary boot_platform_openfirmware_ppc :
 	arch_mmu.cpp
 	arch_cpu_asm.S