diff --git a/.travis.yml b/.travis.yml
index f086ea8e..cb195b43 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,14 +7,18 @@ sudo: required
 matrix:
   include:
     - os: linux
+      env:
+        - MAKE_FLAGS="CFLAGS+=-Werror "
 
     - os: linux
       env:
         - MATRIX_EVAL="CC=clang"
+        - MAKE_FLAGS="CFLAGS+=-Werror "
 
     - os: linux
       env:
         - MATRIX_EVAL="CFLAGS=-m32 && LDFLAGS=-m32"
+        - MAKE_FLAGS="CFLAGS+=-Werror "
 
     - os: linux
       addons:
@@ -25,6 +29,7 @@ matrix:
       env:
         - CONFIG_OPTS="--host x86_64-w64-mingw32"
         - MATRIX_EVAL="CC=x86_64-w64-mingw32-gcc"
+        - MAKE_FLAGS="CFLAGS+=-Werror "
 
     - os: linux
       addons:
@@ -35,6 +40,7 @@ matrix:
       env:
         - CONFIG_OPTS="--host i686-w64-mingw32"
         - MATRIX_EVAL="CC=i686-w64-mingw32-gcc"
+        - MAKE_FLAGS="CFLAGS+=-Werror "
 
     - os: linux
       install:
@@ -42,7 +48,7 @@ matrix:
         - pushd sparse && make HAVE_LLVM=no && sudo make install HAVE_LLVM=no && popd
       env:
         - MATRIX_EVAL="CC=cgcc"
-        - MAKE_FLAGS="CFLAGS=-Wsparse-error CFLAGS+=-Wno-vla CFLAGS+=-Wno-old-initializer"
+        - MAKE_FLAGS="CFLAGS=-Wsparse-error CFLAGS+=-Wno-vla CFLAGS+=-Wno-old-initializer CFLAGS+=-Werror "
 
 before_install:
     - eval "${MATRIX_EVAL}"
diff --git a/lib/platform/linux-i2c.c b/lib/platform/linux-i2c.c
index de5fa238..d3b5ec9a 100644
--- a/lib/platform/linux-i2c.c
+++ b/lib/platform/linux-i2c.c
@@ -560,7 +560,6 @@ static ssize_t i2c_write_from_gas(struct switchtec_dev *dev, int fd,
 
 // noop conversion functions to make macros below work
 static inline uint8_t le8toh(uint8_t x) { return x; }
-static inline uint8_t htole8(uint8_t x) { return x; }
 
 #define create_gas_read(type, suffix) \
 	static type i2c_gas_read ## suffix(struct switchtec_dev *dev, \
diff --git a/lib/switchtec.c b/lib/switchtec.c
index 7f370368..24b6f0ad 100644
--- a/lib/switchtec.c
+++ b/lib/switchtec.c
@@ -949,7 +949,7 @@ static int write_parsed_log(struct log_a_data log_data[],
 	unsigned int nanos, micros, millis, secs, mins, hours, days;
 	unsigned int entry_num;
 	unsigned int mod_id;
-	unsigned int log_sev;
+	unsigned int log_sev = 0;
 	const char *log_sev_strs[] = {"DISABLED", "HIGHEST", "HIGH", "MEDIUM",
 				      "LOW", "LOWEST"};
 	bool is_bl1;