diff --git a/src/asn1Coding.c b/src/asn1Coding.c
index 381a1c3..9b54a75 100644
--- a/src/asn1Coding.c
+++ b/src/asn1Coding.c
@@ -72,13 +72,13 @@
 
   int ret;
 
-  ret = fscanf (file, "%s", varName);
+  ret = fscanf (file, "%1023s", varName);
   if (ret == EOF)
     return ASSIGNMENT_EOF;
   if (!strcmp (varName, "''"))
     varName[0] = 0;
 
-  ret = fscanf (file, "%s", value);
+  ret = fscanf (file, "%1023s", value);
   if (ret == EOF)
     return ASSIGNMENT_ERROR;