diff --git a/docs/README.md b/docs/README.md
index 9867c1f7..a4ed287d 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -1115,14 +1115,6 @@ Read file contents into a nul-terminated malloc-ed string. It is a caller's
 responsibility to free() a returned pointer. If `sizep` is not NULL, it will
 return a file size in bytes.
 
-### mg\_file\_size()
-
-```c
-size_t mg_file_size(const char *path);
-```
-
-Return file size, or 0 on failure. Empty files also report 0 length.
-
 ### mg\_file\_write()
 
 ```c
diff --git a/mongoose.c b/mongoose.c
index 96ac19ef..3c31db83 100644
--- a/mongoose.c
+++ b/mongoose.c
@@ -3921,21 +3921,14 @@ int mg_stat(const char *path, mg_stat_t *st) {
 #endif
 }
 
-int64_t mg_file_size(const char *path) {
-#if MG_ARCH == MG_ARCH_FREERTOS_TCP && defined(MG_ENABLE_FF)
-  struct FF_STAT st;
-  return ff_stat(path, &st) == 0 ? st.st_size : 0;
-#else
-  mg_stat_t st;
-  return mg_stat(path, &st) == 0 ? st.st_size : 0;
-#endif
-}
-
 char *mg_file_read(const char *path, size_t *sizep) {
   FILE *fp;
   char *data = NULL;
-  size_t size = (size_t) mg_file_size(path);
+  size_t size = 0;
   if ((fp = fopen(path, "rb")) != NULL) {
+    fseek(fp, 0, SEEK_END);
+    size = (size_t) ftell(fp);
+    rewind(fp);
     data = (char *) calloc(1, size + 1);
     if (data != NULL) {
       if (fread(data, 1, size, fp) != size) {
diff --git a/mongoose.h b/mongoose.h
index ba03763e..d5dcca86 100644
--- a/mongoose.h
+++ b/mongoose.h
@@ -541,7 +541,6 @@ void mg_timer_poll(unsigned long uptime_ms);
 #endif
 
 char *mg_file_read(const char *path, size_t *size);
-int64_t mg_file_size(const char *path);
 bool mg_file_write(const char *path, const void *buf, size_t len);
 bool mg_file_printf(const char *path, const char *fmt, ...);
 void mg_random(void *buf, size_t len) WEAK;
diff --git a/src/util.c b/src/util.c
index 54fb4a4e..0e3af39d 100644
--- a/src/util.c
+++ b/src/util.c
@@ -13,21 +13,14 @@ int mg_stat(const char *path, mg_stat_t *st) {
 #endif
 }
 
-int64_t mg_file_size(const char *path) {
-#if MG_ARCH == MG_ARCH_FREERTOS_TCP && defined(MG_ENABLE_FF)
-  struct FF_STAT st;
-  return ff_stat(path, &st) == 0 ? st.st_size : 0;
-#else
-  mg_stat_t st;
-  return mg_stat(path, &st) == 0 ? st.st_size : 0;
-#endif
-}
-
 char *mg_file_read(const char *path, size_t *sizep) {
   FILE *fp;
   char *data = NULL;
-  size_t size = (size_t) mg_file_size(path);
+  size_t size = 0;
   if ((fp = fopen(path, "rb")) != NULL) {
+    fseek(fp, 0, SEEK_END);
+    size = (size_t) ftell(fp);
+    rewind(fp);
     data = (char *) calloc(1, size + 1);
     if (data != NULL) {
       if (fread(data, 1, size, fp) != size) {
diff --git a/src/util.h b/src/util.h
index f530f74d..a261813f 100644
--- a/src/util.h
+++ b/src/util.h
@@ -17,7 +17,6 @@
 #endif
 
 char *mg_file_read(const char *path, size_t *size);
-int64_t mg_file_size(const char *path);
 bool mg_file_write(const char *path, const void *buf, size_t len);
 bool mg_file_printf(const char *path, const char *fmt, ...);
 void mg_random(void *buf, size_t len) WEAK;