diff --git a/ChangeLog b/ChangeLog
index 77271dc..1afd9de 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2020-01-06         Arnold D. Robbins     <arnold@skeeve.com>
+
+	Minor fixes.
+	* b.c (replace_repeat): Turn init_q back into an int.
+	* lex.c (string): Use \a instead of \007.
+	* tran.c (catstr): Use snprintf instead of sprintf.
+
 2020-01-01         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* tran.c (syminit, arginit, envinit): Free sval member before
diff --git a/b.c b/b.c
index c400363..5671796 100644
--- a/b.c
+++ b/b.c
@@ -909,7 +909,7 @@ replace_repeat(const uschar *reptok, int reptoklen, const uschar *atom,
 	int i, j;
 	uschar *buf = 0;
 	int ret = 1;
-	bool init_q = (firstnum == 0);		/* first added char will be ? */
+	int init_q = (firstnum == 0);		/* first added char will be ? */
 	int n_q_reps = secondnum-firstnum;	/* m>n, so reduce until {1,m-n} left  */
 	int prefix_length = reptok - basestr;	/* prefix includes first rep	*/
 	int suffix_length = strlen((const char *) reptok) - reptoklen;	/* string after rep specifier	*/
diff --git a/lex.c b/lex.c
index 1c6a0b7..d729516 100644
--- a/lex.c
+++ b/lex.c
@@ -390,7 +390,7 @@ int string(void)
 			case 'r': *bp++ = '\r'; break;
 			case 'b': *bp++ = '\b'; break;
 			case 'v': *bp++ = '\v'; break;
-			case 'a': *bp++ = '\007'; break;
+			case 'a': *bp++ = '\a'; break;
 			case '\\': *bp++ = '\\'; break;
 
 			case '0': case '1': case '2': /* octal: \d \dd \ddd */
diff --git a/tran.c b/tran.c
index 1fca361..d659cfa 100644
--- a/tran.c
+++ b/tran.c
@@ -527,12 +527,14 @@ Cell *catstr(Cell *a, Cell *b) /* concatenate a and b */
 	if (p == NULL)
 		FATAL("out of space concatenating %s and %s", sa, sb);
 	snprintf(p, l, "%s%s", sa, sb);
-	char *newbuf = malloc(strlen(p) + 2);
+
+	l++;	// add room for ' '
+	char *newbuf = malloc(l);
 	if (newbuf == NULL)
 		FATAL("out of space concatenating %s and %s", sa, sb);
 	// See string() in lex.c; a string "xx" is stored in the symbol
 	// table as "xx ".
-	sprintf(newbuf, "%s ", p);
+	snprintf(newbuf, l, "%s ", p);
 	c = setsymtab(newbuf, p, 0.0, CON|STR|DONTFREE, symtab);
 	free(p);
 	free(newbuf);