diff --git a/sys/modules/i2c/iicbb/Makefile b/sys/modules/i2c/iicbb/Makefile
index b2263107e5f7..1235debe1ea9 100644
--- a/sys/modules/i2c/iicbb/Makefile
+++ b/sys/modules/i2c/iicbb/Makefile
@@ -2,7 +2,8 @@
 
 .PATH:		${.CURDIR}/../../../dev/iicbus
 .if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "arm" || \
-    ${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc"
+    ${MACHINE_CPUARCH} == "mips" || ${MACHINE_CPUARCH} == "powerpc" || \
+    ${MACHINE_CPUARCH} == "riscv"
 ofw_bus_if=	ofw_bus_if.h
 .endif
 KMOD		= iicbb
diff --git a/sys/modules/uart/Makefile b/sys/modules/uart/Makefile
index 3caa61de8aef..b9e4a7ae469b 100644
--- a/sys/modules/uart/Makefile
+++ b/sys/modules/uart/Makefile
@@ -11,7 +11,8 @@ uart_dev_lpc=	uart_dev_lpc.c
 .endif
 
 .if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "arm" || \
-    ${MACHINE_CPUARCH} == "sparc64" || ${MACHINE_CPUARCH} == "powerpc"
+    ${MACHINE_CPUARCH} == "powerpc" || ${MACHINE_CPUARCH} == "riscv" || \
+    ${MACHINE_CPUARCH} == "sparc64"
 ofw_bus_if=	ofw_bus_if.h
 .endif