diff --git a/lib/file.c b/lib/file.c
index b88f612305..297503edcc 100644
--- a/lib/file.c
+++ b/lib/file.c
@@ -358,7 +358,7 @@ static CURLcode file_upload(struct Curl_easy *data,
     return CURLE_WRITE_ERROR;
   }
 
-  if(-1 != data->state.infilesize)
+  if(data->state.infilesize != -1)
     /* known size of data to "upload" */
     Curl_pgrsSetUploadSize(data, data->state.infilesize);
 
@@ -470,7 +470,7 @@ static CURLcode file_do(struct Curl_easy *data, bool *done)
   fd = file->fd;
 
   /* VMS: This only works reliable for STREAMLF files */
-  if(-1 != fstat(fd, &statbuf)) {
+  if(fstat(fd, &statbuf) != -1) {
     if(!S_ISDIR(statbuf.st_mode))
       expected_size = statbuf.st_size;
     /* and store the modification time */
diff --git a/lib/ftp.c b/lib/ftp.c
index f763b183b1..dc90e5a595 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2356,7 +2356,7 @@ static CURLcode ftp_state_size_resp(struct Curl_easy *data,
 
   if(instate == FTP_SIZE) {
 #ifdef CURL_FTP_HTTPSTYLE_HEAD
-    if(-1 != filesize) {
+    if(filesize != -1) {
       char clbuf[128];
       int clbuflen = msnprintf(clbuf, sizeof(clbuf),
                 "Content-Length: %" FMT_OFF_T "\r\n", filesize);
@@ -3439,7 +3439,7 @@ static CURLcode ftp_done(struct Curl_easy *data, CURLcode status,
     }
   }
   else {
-    if((-1 != data->req.size) &&
+    if((data->req.size != -1) &&
        (data->req.size != data->req.bytecount) &&
        (data->req.maxdownload != data->req.bytecount)) {
       failf(data, "Received only partial file: %" FMT_OFF_T " bytes",
diff --git a/lib/sendf.c b/lib/sendf.c
index 9b6908f92d..6bd4b1bfba 100644
--- a/lib/sendf.c
+++ b/lib/sendf.c
@@ -281,7 +281,7 @@ static CURLcode cw_download_write(struct Curl_easy *data,
    * This gives deterministic BODY writes on varying buffer receive
    * lengths. */
   nwrite = nbytes;
-  if(-1 != data->req.maxdownload) {
+  if(data->req.maxdownload != -1) {
     size_t wmax = get_max_body_write_len(data, data->req.maxdownload);
     if(nwrite > wmax) {
       excess_len = nbytes - wmax;
@@ -879,7 +879,7 @@ static CURLcode cr_in_rewind(struct Curl_easy *data,
       int err = fseek(data->state.in, 0, SEEK_SET);
       CURL_TRC_READ(data, "cr_in, rewind via fseek -> %d(%d)",
                     (int)err, (int)errno);
-      if(-1 != err)
+      if(err != -1)
         /* successful rewind */
         return CURLE_OK;
     }
diff --git a/src/tool_filetime.c b/src/tool_filetime.c
index f4ff3a4291..d94df35346 100644
--- a/src/tool_filetime.c
+++ b/src/tool_filetime.c
@@ -76,7 +76,7 @@ int getfiletime(const char *filename, struct GlobalConfig *global,
   }
 #else
   struct_stat statbuf;
-  if(-1 != stat(filename, &statbuf)) {
+  if(stat(filename, &statbuf) != -1) {
     *stamp = (curl_off_t)statbuf.st_mtime;
     rc = 0;
   }