diff --git a/src/os_unix.c b/src/os_unix.c
index 714f203..f5dea37 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -4396,9 +4396,9 @@
 
    if (retval == -1 || ws.ws_col == 0 || ws.ws_row == 0)
    {
-       cs_out->cs_xpixel = -1;
-       cs_out->cs_ypixel = -1;
-       return;
+	cs_out->cs_xpixel = -1;
+	cs_out->cs_ypixel = -1;
+	return;
    }
 
    // calculate parent tty's pixel per cell.
@@ -6969,9 +6969,9 @@
     }
     if (shell_style == STYLE_ECHO)
     {
-       if (strstr((char *)gettail(p_sh), "bash") != NULL)
+	if (strstr((char *)gettail(p_sh), "bash") != NULL)
 	    shell_style = STYLE_GLOBSTAR;
-       else if (strstr((char *)gettail(p_sh), "sh") != NULL)
+	else if (strstr((char *)gettail(p_sh), "sh") != NULL)
 	    shell_style = STYLE_VIMGLOB;
     }