diff --git a/lib/asn1/asn1_locl.h b/lib/asn1/asn1_locl.h
index d1e65f084..e91fa0514 100644
--- a/lib/asn1/asn1_locl.h
+++ b/lib/asn1/asn1_locl.h
@@ -12,6 +12,7 @@
 #include <string.h>
 #include <limits.h>
 #include <ctype.h>
+#include <time.h>
 #include "gen.h"
 #include "hash.h"
 #include "symbol.h"
diff --git a/lib/asn1/gen.c b/lib/asn1/gen.c
index 1c3cc8d3c..52becd7a8 100644
--- a/lib/asn1/gen.c
+++ b/lib/asn1/gen.c
@@ -25,7 +25,8 @@ init_generate (char *filename)
 	     "#ifndef __" STEM "_h__\n"
 	     "#define __" STEM "_h__\n\n");
     fprintf (headerfile, 
-	     "#include <stddef.h>\n\n");
+	     "#include <stddef.h>\n"
+	     "#include <time.h>\n\n");
     fprintf (headerfile,
 	     "typedef struct {\n"
 	     "  size_t length;\n"