diff --git a/common/utils/LOG/log.c b/common/utils/LOG/log.c
index 1fe2280c15..91c97ac1ac 100644
--- a/common/utils/LOG/log.c
+++ b/common/utils/LOG/log.c
@@ -145,7 +145,13 @@ static const char *const log_level_highlight_end[] =
     {LOG_RESET, LOG_RESET, LOG_RESET, LOG_RESET, LOG_RESET, LOG_RESET}; /*!< \brief Optional end-format strings for highlighting */
 static void log_output_memory(log_component_t *c, const char *file, const char *func, int line, int comp, int level, const char* format,va_list args);
 
-int write_file_matlab(const char *fname, const char *vname, void *data, int length, int dec, unsigned int format, int multiVec)
+int write_file_matlab(const char *fname,
+                      const char *vname,
+                      const void *data,
+                      int length,
+                      int dec,
+                      unsigned int format,
+                      int multiVec)
 {
   FILE *fp=NULL;
   int i;
diff --git a/common/utils/LOG/log.h b/common/utils/LOG/log.h
index 1f7474253c..a8c7becfdf 100644
--- a/common/utils/LOG/log.h
+++ b/common/utils/LOG/log.h
@@ -316,8 +316,14 @@ void close_log_mem(void);
 #define MATLAB_CSHORT_BRACKET1 13
 #define MATLAB_CSHORT_BRACKET2 14
 #define MATLAB_CSHORT_BRACKET3 15
-  
-int32_t write_file_matlab(const char *fname, const char *vname, void *data, int length, int dec, unsigned int format, int multiVec);
+
+int32_t write_file_matlab(const char *fname,
+                          const char *vname,
+                          const void *data,
+                          int length,
+                          int dec,
+                          unsigned int format,
+                          int multiVec);
 #define write_output(a, b, c, d, e, f) write_file_matlab(a, b, c, d, e, f, 0)
 
 /*----------------macro definitions for reading log configuration from the config module */