diff --git a/.gitignore b/.gitignore
index 60663b5..bebb0db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 
 # Object files
 *.o
+*/mk/*
 
 # Libraries
 *.lib
diff --git a/LocCorr_new/CMakeLists.txt b/LocCorr_new/CMakeLists.txt
index f1e5509..00ddf1a 100644
--- a/LocCorr_new/CMakeLists.txt
+++ b/LocCorr_new/CMakeLists.txt
@@ -20,13 +20,13 @@ option(BASLER "Add Basler cameras support" OFF)
 option(GRASSHOPPER "Add GrassHopper cameras support" OFF)
 option(HIKROBOT "Add HikRobot cameras support" OFF)
 
-# default flags
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -W -Wextra -std=c17")
+# default flags (c17 because MVS code have `typedef char bool`)
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -W -Wextra -Werror -std=c17")
 set(CMAKE_COLOR_MAKEFILE ON)
 
 # cmake -DDEBUG=yes -> debugging
 if(DEBUG)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Og -g3 -ggdb -fno-builtin-strlen -Werror")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Og -g3 -ggdb -fno-builtin-strlen")
     add_definitions(-DEBUG)
     set(CMAKE_BUILD_TYPE DEBUG)
     set(CMAKE_VERBOSE_MAKEFILE "ON")
diff --git a/LocCorr_new/cameracapture.c b/LocCorr_new/cameracapture.c
index cdac4d4..fa22143 100644
--- a/LocCorr_new/cameracapture.c
+++ b/LocCorr_new/cameracapture.c
@@ -301,7 +301,9 @@ int camcapture(void (*process)(Image*)){
     }
     exptime = theconf.exptime;
     while(1){
+#ifdef EBUG
         double t0 = sl_dtime();
+#endif
         if(stopwork){
             DBG("STOP");
             break;
diff --git a/LocCorr_new/imagefile.c b/LocCorr_new/imagefile.c
index 5a31ad0..816368b 100644
--- a/LocCorr_new/imagefile.c
+++ b/LocCorr_new/imagefile.c
@@ -39,7 +39,7 @@
 #include "median.h"
 
 typedef struct{
-    const char signature[8];
+    const uint8_t signature[8];
     uint8_t len;
     InputType it;
 } imsign;