diff --git a/src/report.c b/src/report.c
index 65c3fcd94..aecca650e 100644
--- a/src/report.c
+++ b/src/report.c
@@ -541,10 +541,16 @@ NH_panictrace_gdb(void)
 # endif /* !PANICTRACE_GDB */
 }
 
+#ifdef DUMPLOG_CORE
+#define USED_if_dumplog
+#else
+#define USED_if_dumplog UNUSED
+#endif
+
 /* lineno==0 gives the most recent message (e.g.
    "Do you want to call panic..." if called from #panic) */
 const char *
-get_saved_pline(int lineno)
+get_saved_pline(int lineno USED_if_dumplog)
 {
 #ifdef DUMPLOG_CORE
     int p;
@@ -566,6 +572,8 @@ get_saved_pline(int lineno)
     return NULL;
 }
 
+#undef USED_if_dumplog
+
 # ifndef NO_SIGNAL
 /* called as signal() handler, so sent at least one arg */
 /*ARGUSED*/