diff --git a/docs/README.md b/docs/README.md
index c505dcd4..93805f7d 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -313,7 +313,6 @@ Here is a list of build constants and their default values:
 |MG_MAX_HTTP_HEADERS | 40 | Maximum number of HTTP headers |
 |MG_HTTP_INDEX | "index.html" | Index file for HTML directory |
 |MG_FATFS_ROOT | "/" | FAT FS root directory |
-|MG_PUTCHAR | putchar | Character output function, used by logging |
 
 <span class="badge bg-danger">NOTE:</span> the `MG_IO_SIZE` constant also sets
 maximum UDP message size, see
@@ -3671,6 +3670,31 @@ Usage example:
 mg_hexdump(c->recv.buf, c->recv.len);  // Hex dump incoming data
 ```
 
+### mg\_log\_set\_fn()
+
+```c
+void mg_log_set_fn(void (*logfunc)(unsigned char ch));
+```
+
+Redirect logs to a custom function. Parameters:
+- `logfunc` - a pointer to a function that logs a single character
+
+Usage example: redirecting logs to syslog.
+
+```c
+static void mylog(uint8_t ch) {
+  static char buf[128];
+  static struct mg_iobuf log = { .buf = buf, .size = sizeof(buf), .len = 0};
+  log.buf[log.len++] = ch;
+  if (ch == '\n' || log.len >= log.size) {
+    syslog(LOG_INFO, "%.*s", (int) log.len, log.buf);
+    log.len = 0;
+  }
+}
+...
+mg_log_set_fn(mylog);
+```
+
 ## Filesystem
 
 ### struct mg\_fs
diff --git a/mongoose.c b/mongoose.c
index 9d472e83..b878337b 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -2252,10 +2252,19 @@ char *mg_json_get_str(struct mg_str json, const char *path) {
 
 
 
+static void default_logger(unsigned char c) {
+  putchar(c);
+}
+
 static const char *s_spec = "2";
+static void (*s_log_func)(unsigned char) = default_logger;
+
+void mg_log_set_callback(void (*fn)(unsigned char)) {
+  s_log_func = fn;
+}
 
 static void logc(unsigned char c) {
-  MG_PUTCHAR(c);
+  s_log_func(c);
 }
 
 static void logs(const char *buf, size_t len) {
diff --git a/mongoose.h b/mongoose.h
index c84803f2..cddeb2c4 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -576,6 +576,10 @@ int sscanf(const char *, const char *, ...);
 #endif
 
 
+#ifndef MG_ENABLE_LOG
+#define MG_ENABLE_LOG 1
+#endif
+
 #ifndef MG_ENABLE_MIP
 #define MG_ENABLE_MIP 0
 #endif
@@ -679,10 +683,6 @@ int sscanf(const char *, const char *, ...);
 #endif
 #endif
 
-#ifndef MG_PUTCHAR
-#define MG_PUTCHAR(x) putchar(x)
-#endif
-
 
 
 
@@ -740,11 +740,19 @@ void mg_log(const char *fmt, ...);
 bool mg_log_prefix(int ll, const char *file, int line, const char *fname);
 void mg_log_set(const char *spec);
 void mg_hexdump(const void *buf, size_t len);
+void mg_log_set_fn(void (*logfunc)(unsigned char ch));
 
+#if MG_ENABLE_LOG
 #define MG_LOG(level, args)                                                \
   do {                                                                     \
     if (mg_log_prefix((level), __FILE__, __LINE__, __func__)) mg_log args; \
   } while (0)
+#else
+#define MG_LOG(level, args) \
+  do {                      \
+    if (0) mg_log args;     \
+  } while (0)
+#endif
 
 #define MG_ERROR(args) MG_LOG(MG_LL_ERROR, args)
 #define MG_INFO(args) MG_LOG(MG_LL_INFO, args)
diff --git a/src/config.h b/src/config.h
index 1f96cbb3..28a8afe5 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifndef MG_ENABLE_LOG
+#define MG_ENABLE_LOG 1
+#endif
+
 #ifndef MG_ENABLE_MIP
 #define MG_ENABLE_MIP 0
 #endif
@@ -102,7 +106,3 @@
 #define MG_ENABLE_FILE 0
 #endif
 #endif
-
-#ifndef MG_PUTCHAR
-#define MG_PUTCHAR(x) putchar(x)
-#endif
diff --git a/src/log.c b/src/log.c
index 5a5f9e12..fd3e8638 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,10 +1,19 @@
 #include "log.h"
 #include "util.h"
 
+static void default_logger(unsigned char c) {
+  putchar(c);
+}
+
 static const char *s_spec = "2";
+static void (*s_log_func)(unsigned char) = default_logger;
+
+void mg_log_set_callback(void (*fn)(unsigned char)) {
+  s_log_func = fn;
+}
 
 static void logc(unsigned char c) {
-  MG_PUTCHAR(c);
+  s_log_func(c);
 }
 
 static void logs(const char *buf, size_t len) {
diff --git a/src/log.h b/src/log.h
index 20510147..0450ed2b 100644
--- a/src/log.h
+++ b/src/log.h
@@ -8,11 +8,19 @@ void mg_log(const char *fmt, ...);
 bool mg_log_prefix(int ll, const char *file, int line, const char *fname);
 void mg_log_set(const char *spec);
 void mg_hexdump(const void *buf, size_t len);
+void mg_log_set_fn(void (*logfunc)(unsigned char ch));
 
+#if MG_ENABLE_LOG
 #define MG_LOG(level, args)                                                \
   do {                                                                     \
     if (mg_log_prefix((level), __FILE__, __LINE__, __func__)) mg_log args; \
   } while (0)
+#else
+#define MG_LOG(level, args) \
+  do {                      \
+    if (0) mg_log args;     \
+  } while (0)
+#endif
 
 #define MG_ERROR(args) MG_LOG(MG_LL_ERROR, args)
 #define MG_INFO(args) MG_LOG(MG_LL_INFO, args)