diff --git a/src/strpkg/collect.nim b/src/strpkg/collect.nim
index 2844ffe..eee287a 100644
--- a/src/strpkg/collect.nim
+++ b/src/strpkg/collect.nim
@@ -34,7 +34,7 @@ proc tostring*(s:Support, b:Bounds, chrom:string): string =
   result = &"{chrom}\t{b.left}\t{b.right}\t{s.Type}\t{s.SpanningFragmentLength}\t{s.SpanningFragmentPercentile}\t{s.SpanningReadRepeatCount}\t{s.SpanningReadCigarInsertionLen}\t{s.SpanningReadCigarDeletionLen}\t{s.repeat}\t{s.qname}"
 
 proc spanning_fragment*(L:Record, R:Record, bounds:Bounds, support:var Support, frag_sizes: array[4096, uint32]): bool =
-  doAssert L.start <= R.start
+  doAssert L.start <= R.start, $(L, R, bounds)
   var bound_width = bounds.right.int - bounds.left.int
   var slop = bounds.repeat.len - 1
   if bound_width < 5: # Add extra slop for very small bounds
diff --git a/src/strpkg/version.nim b/src/strpkg/version.nim
index ca852b7..b97c752 100644
--- a/src/strpkg/version.nim
+++ b/src/strpkg/version.nim
@@ -1,4 +1,4 @@
-const strlingVersion* = "0.5.1"
+const strlingVersion* = "0.5.2"
 
 # bin file format version
 const thisFmtVersion* = 0'i16
diff --git a/strling.nimble b/strling.nimble
index 1763a99..df22f97 100644
--- a/strling.nimble
+++ b/strling.nimble
@@ -9,7 +9,7 @@ template thisModuleFile: string = instantiationInfo(fullPaths = true).filename
 #  # When the package is installed, the ``src`` directory disappears.
 #  import strpkg/version as _
 
-version       = "0.5.1"
+version       = "0.5.2"
 author        = "Harriet and Brent"
 description   = "Novel STR caller"
 license       = "MIT"