diff --git a/src/FileCheck b/src/FileCheck
index 8e39ec5..0ba25d2 100755
--- a/src/FileCheck
+++ b/src/FileCheck
@@ -65,7 +65,11 @@ def dump_check(check):
 
 
 # FileCheck always prints its first argument.
-print(sys.argv[0])
+filecheck_path = sys.argv[0]
+if os.path.exists(filecheck_path):
+    filecheck_path = os.path.abspath(filecheck_path)
+
+print(filecheck_path)
 
 if len(sys.argv) == 1:
     print("<check-file> not specified")