diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 39ba8b5..335b2ba 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -1650,7 +1650,7 @@
 {
     vim_snprintf((char *)IObuff, IOSIZE, _("%sviminfo: %s in line: "),
 							     errnum, message);
-    STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff));
+    STRNCAT(IObuff, line, IOSIZE - STRLEN(IObuff) - 1);
     if (IObuff[STRLEN(IObuff) - 1] == '\n')
 	IObuff[STRLEN(IObuff) - 1] = NUL;
     emsg(IObuff);
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 140fdca..15be17b 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -2660,7 +2660,7 @@
 		errormsg = IObuff;
 	    }
 	    STRCAT(errormsg, ": ");
-	    STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff));
+	    STRNCAT(errormsg, *cmdlinep, IOSIZE - STRLEN(IObuff) - 1);
 	}
 	emsg(errormsg);
     }
diff --git a/src/version.c b/src/version.c
index 3310ef2..b77a93e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -667,6 +667,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    174,
+/**/
     173,
 /**/
     172,