diff --git a/src/lib/fastcgi.c b/src/lib/fastcgi.c
index 0d03218..4bfe637 100644
--- a/src/lib/fastcgi.c
+++ b/src/lib/fastcgi.c
@@ -221,7 +221,8 @@ int fastcgi_close_stdin(fastcgi_conn *conn) {
 int fastcgi_php_error(const fastcgi_conn *conn, const char *msg, int msg_len, char *err_msg) {
     char *msg_str = malloc(msg_len + 1);
     char *ptr0 = msg_str;
-    strncpy(msg_str, msg, msg_len);
+    memcpy(msg_str, msg, msg_len);
+    msg_str[msg_len] = 0;
     char *ptr1 = NULL;
     int len;
     int err = 0;
diff --git a/src/lib/http.c b/src/lib/http.c
index 1e36a01..a73cb3f 100644
--- a/src/lib/http.c
+++ b/src/lib/http.c
@@ -262,21 +262,27 @@ int http_add_header_field_len(http_hdr *hdr, const char *name, unsigned long nam
 
     if (name_len < sizeof(f->normal.name) && value_len < sizeof(f->normal.value)) {
         f->type = HTTP_FIELD_NORMAL;
-        strncpy(f->normal.name, name, name_len);
-        strncpy(f->normal.value, value, value_len);
+        memcpy(f->normal.name, name, name_len);
+        memcpy(f->normal.value, value, value_len);
+        f->normal.name[name_len] = 0;
+        f->normal.value[value_len] = 0;
         http_to_camel_case(f->normal.name, HTTP_PRESERVE);
     } else if (name_len < sizeof(f->ex_value.name)) {
         f->type = HTTP_FIELD_EX_VALUE;
         f->ex_value.value = malloc(value_len + 1);
-        strncpy(f->ex_value.name, name, name_len);
-        strncpy(f->ex_value.value, value, value_len);
+        memcpy(f->ex_value.name, name, name_len);
+        memcpy(f->ex_value.value, value, value_len);
+        f->ex_value.name[name_len] = 0;
+        f->ex_value.value[value_len] = 0;
         http_to_camel_case(f->ex_value.name, HTTP_PRESERVE);
     } else {
         f->type = HTTP_FIELD_EX_NAME;
         f->ex_name.name = malloc(name_len + 1);
         f->ex_name.value = malloc(value_len + 1);
-        strncpy(f->ex_name.name, name, name_len);
-        strncpy(f->ex_name.value, value, value_len);
+        memcpy(f->ex_name.name, name, name_len);
+        memcpy(f->ex_name.value, value, value_len);
+        f->ex_name.name[name_len] = 0;
+        f->ex_name.value[value_len] = 0;
         http_to_camel_case(f->ex_name.name, HTTP_PRESERVE);
     }
 
diff --git a/src/lib/utils.c b/src/lib/utils.c
index a843fd2..ef2d24a 100644
--- a/src/lib/utils.c
+++ b/src/lib/utils.c
@@ -135,7 +135,8 @@ int mime_is_compressible(const char *type) {
 }
 
 int strcpy_rem_webroot(char *dst, const char *src, long len, const char *webroot) {
-    strncpy(dst, src, len);
+    memcpy(dst, src, len);
+    dst[len] = 0;
     if (webroot == NULL)
         return 0;