diff --git a/lib/options.f90 b/lib/options.f90
index 7a04df16f..401d4a626 100644
--- a/lib/options.f90
+++ b/lib/options.f90
@@ -104,7 +104,7 @@ contains
     integer, save :: pos = 1, cnt = 0
     character(len=500), save :: arg
 
-    integer :: chrpos, length, st, id
+    integer :: chrpos, length, st, id = 0
     character :: chr
     logical :: long
 
diff --git a/lib/tmoonsub.c b/lib/tmoonsub.c
index 429313348..ec3707e64 100644
--- a/lib/tmoonsub.c
+++ b/lib/tmoonsub.c
@@ -36,7 +36,7 @@ void tmoonsub_(double *day, double *glat, double *glong, double *moonalt,
    double *mrv, double *l, double *b, double *paxis);
 
 static const char
-*usage = "  Usage: tmoon date[yyyymm] timz[+/-h.hh] long[+/-dddmm] lat[+/-ddmm]\n"
+usage[] = "  Usage: tmoon date[yyyymm] timz[+/-h.hh] long[+/-dddmm] lat[+/-ddmm]\n"
             "example: tmoon 200009 0 -00155 5230\n";
 
 /*