diff --git a/profile/legacy_profile.go b/profile/legacy_profile.go
index fdd1347..9afd609 100644
--- a/profile/legacy_profile.go
+++ b/profile/legacy_profile.go
@@ -39,9 +39,9 @@ var (
 
 	hexNumberRE = regexp.MustCompile(`0x[0-9a-f]+`)
 
-	growthHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ growthz`)
+	growthHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ growthz?`)
 
-	fragmentationHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ fragmentationz`)
+	fragmentationHeaderRE = regexp.MustCompile(`heap profile: *(\d+): *(\d+) *\[ *(\d+): *(\d+) *\] @ fragmentationz?`)
 
 	threadzStartRE = regexp.MustCompile(`--- threadz \d+ ---`)
 	threadStartRE  = regexp.MustCompile(`--- Thread ([[:xdigit:]]+) \(name: (.*)/(\d+)\) stack: ---`)