diff --git a/package/kernel/lantiq/ltq-ifxos/Makefile b/package/kernel/lantiq/ltq-ifxos/Makefile
index 43eb53c5427..bd4f08da836 100644
--- a/package/kernel/lantiq/ltq-ifxos/Makefile
+++ b/package/kernel/lantiq/ltq-ifxos/Makefile
@@ -8,7 +8,7 @@ include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=lib_ifxos
 PKG_VERSION:=1.5.19
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://github.com/xdarklight/$(PKG_NAME)/archive/v$(PKG_VERSION)
diff --git a/package/kernel/lantiq/ltq-ifxos/patches/020-no-O3.patch b/package/kernel/lantiq/ltq-ifxos/patches/020-no-O3.patch
new file mode 100644
index 00000000000..d2e816f5c0d
--- /dev/null
+++ b/package/kernel/lantiq/ltq-ifxos/patches/020-no-O3.patch
@@ -0,0 +1,19 @@
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -45,8 +45,6 @@ endif !HAVE_GCC
+ 
+ if ENABLE_DEBUG
+ used_gcc_cflags += -O1 -g
+-else
+-used_gcc_cflags += -O3
+ endif
+ 
+ AM_CFLAGS = \
+@@ -92,7 +90,6 @@ endif
+ drvifxos_additional_cflags=\
+ 	-DLINUX \
+ 	-D__LINUX__ \
+-	-O \
+ 	-D__KERNEL__ \
+ 	-DMODULE \
+ 	-DEXPORT_SYMTAB
diff --git a/package/kernel/lantiq/ltq-ifxos/patches/200-Fix-app-compilation-failure-from-inclusion-of-wrong-.patch b/package/kernel/lantiq/ltq-ifxos/patches/200-Fix-app-compilation-failure-from-inclusion-of-wrong-.patch
index dee3482e4f2..5d661db8614 100644
--- a/package/kernel/lantiq/ltq-ifxos/patches/200-Fix-app-compilation-failure-from-inclusion-of-wrong-.patch
+++ b/package/kernel/lantiq/ltq-ifxos/patches/200-Fix-app-compilation-failure-from-inclusion-of-wrong-.patch
@@ -37,8 +37,6 @@ Ref: https://bugs.lede-project.org/index.php?do=details&task_id=1196
  src/Makefile.am | 6 +-----
  1 file changed, 1 insertion(+), 5 deletions(-)
 
-diff --git a/src/Makefile.am b/src/Makefile.am
-index f95668f..d232e7f 100644
 --- a/src/Makefile.am
 +++ b/src/Makefile.am
 @@ -14,11 +14,7 @@ lib_LIBRARIES = libifxos.a
@@ -54,6 +52,3 @@ index f95668f..d232e7f 100644
  
  if HAVE_GCC
  
--- 
-1.8.3.1
-