diff --git a/test_regress/driver.py b/test_regress/driver.py
index 3d1c591c6..fc7b12bb7 100755
--- a/test_regress/driver.py
+++ b/test_regress/driver.py
@@ -137,7 +137,7 @@ class SAIFParser:
                 if match:
                     self.duration = int(match.groups()[0])
 
-                match = re.search(r'INSTANCE\s+([\w.]*)', line)
+                match = re.search(r'INSTANCE\s+([\w\.\$]+)', line)
                 if match:
                     instance_name = match.groups()[0]