diff --git a/client/deps/tinycbor/Makefile b/client/deps/tinycbor/Makefile
index 42879259b..4de65aa7f 100644
--- a/client/deps/tinycbor/Makefile
+++ b/client/deps/tinycbor/Makefile
@@ -1,7 +1,7 @@
 MYSRCPATHS =
 MYINCLUDES =
 # Strange errors on Mingw when compiling with C99
-MYCFLAGS = -Wno-bad-function-cast -Wno-incompatible-pointer-types-discards-qualifiers
+MYCFLAGS = -Wno-bad-function-cast -Wno-redundant-decls -Wno-incompatible-pointer-types-discards-qualifiers -Wno-discarded-qualifiers -Wno-unknown-warning-option -Wno-maybe-uninitialized
 MYDEFS =
 MYSRCS = \
     cborencoder.c \
@@ -18,7 +18,4 @@ LIB_A = tinycbor.a
 # Transition: remove old directories and objects
 MYCLEANOLDPATH = ../../tinycbor
 
-# Strange errors on Mingw when compiling with -O3
-CFLAGS ?= -Wall -Werror -O2
-
 include ../../../Makefile.host