diff --git a/R/crown_base_height.r b/R/crown_base_height.r
index 9994103..608de60 100644
--- a/R/crown_base_height.r
+++ b/R/crown_base_height.r
@@ -1,13 +1,24 @@
 crown_base_height <- function(FUELTYPE, CBH, SD, SH) {
   # logic originally in fbp() pulled into its own function
-  CBHs <- c(
-    2, 3, 8, 4, 18, 7, 10,
-    0, 6, 6, 6, 6, 0, 0, 0, 0, 0
-  )
-  names(CBHs) <- c(
-    "C1", "C2", "C3", "C4", "C5", "C6", "C7",
-    "D1", "M1", "M2", "M3", "M4", "S1", "S2", "S3", "O1A", "O1B"
-  )
+CBHs <-c(
+"C1" = 2,  
+"C2" = 3,  
+"C3" = 8,  
+"C4" = 4,  
+"C5" = 18,  
+"C6" = 7,  
+"C7" = 10, 
+"D1" = 0,  
+"M1" = 6,  
+"M2" = 6,  
+"M3" = 6,  
+"M4" = 6,  
+"S1" = 0,  
+"S2" = 0,  
+"S3" = 0,  
+"O1A" = 0,  
+"O1B" =0)
+  
   CBH <- ifelse(
     CBH <= 0 | CBH > 50 | is.na(CBH),
     ifelse(