diff --git a/recipes-bsp/linux/linux-sysmocom_3.2.bb b/recipes-bsp/linux/linux-sysmocom_3.2.bb
index ef45848..7883cc8 100644
--- a/recipes-bsp/linux/linux-sysmocom_3.2.bb
+++ b/recipes-bsp/linux/linux-sysmocom_3.2.bb
@@ -36,8 +36,8 @@ FILES_kernel-image_sysmobts-v1 = ""
 require linux-tools.inc
 
 do_configure() {
-	install -m 0644 ${WORKDIR}/defconfig ${S}/.config
-	oe_runmake oldconfig
+	install -m 0644 ${WORKDIR}/defconfig ${B}/.config
+	oe_runmake -C ${S} O=${B} oldconfig
 }
 
 # autoload defaults (alphabetically sorted)
diff --git a/recipes-bsp/linux/linux-sysmocom_git.bb b/recipes-bsp/linux/linux-sysmocom_git.bb
index 5189660..7649db1 100644
--- a/recipes-bsp/linux/linux-sysmocom_git.bb
+++ b/recipes-bsp/linux/linux-sysmocom_git.bb
@@ -15,7 +15,7 @@ BTS_FIRMWARE_NAME_sysmobts-v2 = "sysmobts-v2"
 
 SRCREV = "9610e792ffde7fb2599d19ca6d2a03230f2043c6"
 
-PR = "r38"
+PR = "r39"
 PV = "${LINUX_VERSION}+git${SRCPV}"
 
 SRC_URI = "git://git.sysmocom.de/sysmo-bts/linux.git;protocol=git;branch=linux-3.10.50 \
@@ -34,8 +34,9 @@ FILES_kernel-image_sysmobts-v1 = ""
 
 require linux-tools.inc
 
-do_configure_prepend() {
+do_configure() {
 	install -m 0644 ${WORKDIR}/defconfig ${B}/.config
+	oe_runmake -C ${S} O=${B} oldconfig
 }
 
 # autoload defaults (alphabetically sorted)