diff --git a/reactos/tools/log2lines/cache.c b/reactos/tools/log2lines/cache.c
index 5f255308425..31ad78bd0f7 100644
--- a/reactos/tools/log2lines/cache.c
+++ b/reactos/tools/log2lines/cache.c
@@ -26,7 +26,7 @@ unpack_iso(char *dir, char *iso)
 {
     char Line[LINESIZE];
     int res = 0;
-    char iso_tmp[MAX_PATH];
+    char iso_tmp[PATH_MAX];
     int iso_copied = 0;
     FILE *fiso;
 
@@ -78,9 +78,9 @@ int
 check_directory(int force)
 {
     char Line[LINESIZE];
-    char freeldr_path[MAX_PATH];
-    char iso_path[MAX_PATH];
-    char compressed_7z_path[MAX_PATH];
+    char freeldr_path[PATH_MAX];
+    char iso_path[PATH_MAX];
+    char compressed_7z_path[PATH_MAX];
     char *check_iso;
     char *check_dir;
 
@@ -141,8 +141,8 @@ check_directory(int force)
             return 1;
         }
     }
-    cache_name = malloc(MAX_PATH);
-    tmp_name = malloc(MAX_PATH);
+    cache_name = malloc(PATH_MAX);
+    tmp_name = malloc(PATH_MAX);
     strcpy(cache_name, opt_dir);
 	if (cleanable(opt_dir))
 		strcat(cache_name, ALT_PATH_STR CACHEFILE);
diff --git a/reactos/tools/log2lines/options.c b/reactos/tools/log2lines/options.c
index efa77e44d18..5bdefbc69b3 100644
--- a/reactos/tools/log2lines/options.c
+++ b/reactos/tools/log2lines/options.c
@@ -39,10 +39,10 @@ int   opt_undo       = 0;        // -u
 int   opt_redo       = 0;        // -U
 char *opt_Revision   = NULL;     // -R
 int   opt_Revision_check = 0;    // -R check
-char  opt_dir[MAX_PATH];         // -d <opt_dir>
-char  opt_logFile[MAX_PATH];     // -l|L <opt_logFile>
+char  opt_dir[PATH_MAX];         // -d <opt_dir>
+char  opt_logFile[PATH_MAX];     // -l|L <opt_logFile>
 char *opt_mod        = NULL;     // -mod for opt_logFile
-char  opt_7z[MAX_PATH];          // -z <opt_7z>
+char  opt_7z[PATH_MAX];          // -z <opt_7z>
 char  opt_scanned[LINESIZE];     // all scanned options
 char  opt_SourcesPath[LINESIZE]; //sources path
 
diff --git a/reactos/tools/log2lines/revision.c b/reactos/tools/log2lines/revision.c
index ae5fa17da37..82ecb28d2c3 100644
--- a/reactos/tools/log2lines/revision.c
+++ b/reactos/tools/log2lines/revision.c
@@ -154,8 +154,8 @@ int
 regscan(FILE *outFile)
 {
     int res = 0;
-    char logname[MAX_PATH];
-    char inxname[MAX_PATH];
+    char logname[PATH_MAX];
+    char inxname[PATH_MAX];
     char line[LINESIZE + 1];
     char line2[LINESIZE + 1];
     FILE *flog = NULL;
@@ -189,8 +189,8 @@ regscan(FILE *outFile)
         if (!res)
         {
             char flag[2];
-            char path[MAX_PATH];
-            char path2[MAX_PATH];
+            char path[PATH_MAX];
+            char path2[PATH_MAX];
             int wflag = 0;
             clilog(outFile, "Regression candidates:\n");
             while (( pos = findRev(finx, &r) ))
@@ -257,8 +257,8 @@ int
 updateSvnlog(void)
 {
     int res = 0;
-    char logname[MAX_PATH];
-    char inxname[MAX_PATH];
+    char logname[PATH_MAX];
+    char inxname[PATH_MAX];
     char line[LINESIZE + 1];
     FILE *flog = NULL;
     FILE *finx = NULL;
diff --git a/reactos/tools/log2lines/util.c b/reactos/tools/log2lines/util.c
index 19e6342934a..b9f223f25eb 100644
--- a/reactos/tools/log2lines/util.c
+++ b/reactos/tools/log2lines/util.c
@@ -95,7 +95,7 @@ static FILE *
 rfopen(char *path, char *mode)
 {
     FILE *f = NULL;
-    char tmppath[MAX_PATH]; // Don't modify const strings
+    char tmppath[PATH_MAX]; // Don't modify const strings
 
     strcpy(tmppath, path);
     f = fopen(tmppath, mode);