diff --git a/src/Snakefiles/functions.sm b/src/Snakefiles/functions.sm
index 34625eb2..c95d286b 100644
--- a/src/Snakefiles/functions.sm
+++ b/src/Snakefiles/functions.sm
@@ -114,13 +114,13 @@ def getMBGMemoryRequest(attempt):              #  Sum the input size, divide by
    return int(math.ceil(math.ceil(mem)*scl))
 
 def getBuildPackagesInputONT(wildcards, withONT, withBAM):
-   result = ""
+   result = []
 
    if withONT == "True":
       if withBAM == "True":
          result=expand("../3-align/split/ont{nnnn}.fasta.gz", nnnn = splitONToutputs(wildcards))
       else:
-          result = "../%s"%(rules.extractONT.output.ont_subset)
+          result.append("../%s"%(rules.extractONT.output.ont_subset))
    return result
 
 def getBuildPackageMemoryRequest(attempt):     #  Sum the size of input files, 2-bit encoded,
@@ -132,6 +132,8 @@ def getBuildPackageMemoryRequest(attempt):     #  Sum the size of input files, 2
       mem = 0
 
       for f in getBuildPackagesInputONT("", config['withONT'], config['withBAM']):
+      # strip leading ../ from name, we need it for buildPackages but not here
+         if f.startswith("../"): f = f[3:]
          mem += getFileBP(f)
 
       for f in HIFI_READS:
diff --git a/src/canu b/src/canu
index afd271c8..e4386f9c 160000
--- a/src/canu
+++ b/src/canu
@@ -1 +1 @@
-Subproject commit afd271c87e18a48a8dbc904d2f0e526addbed188
+Subproject commit e4386f9ca5452d059cffb0b7e7f19e2e1521bb63