diff --git a/src/ctpv.c b/src/ctpv.c
index 9da6bca..d6dd5a0 100644
--- a/src/ctpv.c
+++ b/src/ctpv.c
@@ -205,7 +205,8 @@ static RESULT check_cache(int *resp, char *file, char *cache_file)
 static RESULT preview(int argc, char *argv[])
 {
     char *f, *w, *h, *x, *y, *id;
-    char y_buf[4], h_buf[4];
+    char w_buf[24], h_buf[24], y_buf[24];
+    long w_l, h_l, y_l;
 
     GET_PARG(f, 0);
     GET_PARG(w, 1);
@@ -223,6 +224,10 @@ static RESULT preview(int argc, char *argv[])
     if (!y)
         y = "0";
 
+    ERRCHK_RET_OK(strtol_w(&w_l, w, NULL, 10));
+    ERRCHK_RET_OK(strtol_w(&h_l, h, NULL, 10));
+    ERRCHK_RET_OK(strtol_w(&y_l, y, NULL, 10));
+
     ERRCHK_RET_OK(init_previews());
 
     struct InputFile input_f;
@@ -232,18 +237,21 @@ static RESULT preview(int argc, char *argv[])
         printf("\033[1;36mSymlink points to:\033[m\n\t%s\n\n", input_f.link);
         fflush(stdout);
 
-        if (y && h) {
-            unsigned char y_i = atoi(y);
-            unsigned char h_i = atoi(h);
-            y_i += 3;
-            h_i -= 3;
-            snprintf(y_buf, LEN(y_buf), "%d", y_i);
-            snprintf(h_buf, LEN(h_buf), "%d", h_i);
-            y = y_buf;
-            h = h_buf;
-        }
+        y_l += 3;
+        h_l -= 3;
     }
 
+    /* To some reason lf chops off last 2 characters of a line */
+    w_l -= 2;
+
+    snprintf(w_buf, LEN(w_buf), "%ld", w_l);
+    snprintf(h_buf, LEN(h_buf), "%ld", h_l);
+    snprintf(y_buf, LEN(y_buf), "%ld", y_l);
+
+    w = w_buf;
+    h = h_buf;
+    y = y_buf;
+
     ERRCHK_RET_OK(init_magic());
 
     const char *mimetype;
diff --git a/src/utils.c b/src/utils.c
index b945a30..74d27f5 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -165,3 +165,26 @@ RESULT register_signal(int sig, SigHandler handler)
     ERRCHK_RET_ERN(signal(sig, handler) == SIG_ERR);
     return OK;
 }
+
+RESULT strtol_w(long *res, char *s, char **endptr, int base)
+{
+    char *endptr_int;
+
+    errno = 0;
+    *res = strtol(s, &endptr_int, base);
+
+    if (errno != 0) {
+        FUNCFAILED("strtol", strerror(errno));
+        return ERR;
+    }
+
+    if (endptr_int[0] != '\0') {
+        PRINTINTERR("strtol: invalid number %s", s);
+        return ERR;
+    }
+
+    if (endptr)
+        *endptr = endptr_int;
+
+    return OK;
+}
diff --git a/src/utils.h b/src/utils.h
index 707a121..bef6879 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -44,5 +44,6 @@ int mkpath(char* file_path, int mode);
 const char *get_ext(const char *path);
 
 RESULT register_signal(int sig, SigHandler handler);
+RESULT strtol_w(long *res, char *s, char **endptr, int base);
 
 #endif