diff --git a/contrib/tsearch2/query.c b/contrib/tsearch2/query.c
index 10da22c035f..0a1805e0e75 100644
--- a/contrib/tsearch2/query.c
+++ b/contrib/tsearch2/query.c
@@ -723,7 +723,7 @@ infix(INFIX * in, bool first)
 		{
 			if (*op == '\'')
 			{
-				*(in->cur) = '\'';
+				*(in->cur) = '\\';
 				in->cur++;
 			}
 			*(in->cur) = *op;
diff --git a/contrib/tsearch2/tsvector.c b/contrib/tsearch2/tsvector.c
index 38770dd61c9..cfed6e428a3 100644
--- a/contrib/tsearch2/tsvector.c
+++ b/contrib/tsearch2/tsvector.c
@@ -526,7 +526,7 @@ tsvector_out(PG_FUNCTION_ARGS)
 
 				outbuf = (char *) repalloc((void *) outbuf, ++lenbuf);
 				curout = outbuf + pos;
-				*curout++ = '\'';
+				*curout++ = '\\';
 			}
 			*curout++ = *curin++;
 		}