diff --git a/models/files/C5.0.R b/models/files/C5.0.R
index 16a499531..237f51a43 100644
--- a/models/files/C5.0.R
+++ b/models/files/C5.0.R
@@ -39,7 +39,7 @@ modelInfo <- list(label = "C5.0",
                     argList <- list(x = x, y = y, weights = wts, trials = param$trials,
                                     rules = param$model == "rules")
                     argList <- c(argList, theDots)
-                    do.call(C50::C5.0.default, argList)
+                    do.call(C50:::C5.0.default, argList)
                   },
                   predict = function(modelFit, newdata, submodels = NULL) {
                     out <- predict(modelFit, newdata)
@@ -76,7 +76,7 @@ modelInfo <- list(label = "C5.0",
                     vars <- C50::C5imp(x, metric = "splits")
                     rownames(vars)[vars$Overall > 0]
                   },
-                  varImp = function(object, ...) C5imp(object, ...),
+                  varImp = function(object, ...) C50::C5imp(object, ...),
                   tags = c("Tree-Based Model", "Rule-Based Model", "Implicit Feature Selection",
                            "Boosting", "Ensemble Model", "Handle Missing Predictor Data", "Accepts Case Weights"),
                   sort = function(x) {
diff --git a/models/files/C5.0Cost.R b/models/files/C5.0Cost.R
index 71e496df1..50ed7e806 100644
--- a/models/files/C5.0Cost.R
+++ b/models/files/C5.0Cost.R
@@ -55,7 +55,7 @@ modelInfo <- list(label = "Cost-Sensitive C5.0",
                     } else argList$costs <- cmat
                     
                     argList <- c(argList, theDots)
-                    do.call(C50::C5.0.default, argList)
+                    do.call(C50:::C5.0.default, argList)
                     },
                   predict = function(modelFit, newdata, submodels = NULL) {
                     out <- predict(modelFit, newdata)
@@ -77,7 +77,7 @@ modelInfo <- list(label = "Cost-Sensitive C5.0",
                     rownames(vars)[vars$Overall > 0]
                   },
                   levels = function(x) x$obsLevels,
-                  varImp = function(object, ...) C5imp(object, ...),
+                  varImp = function(object, ...) C50::C5imp(object, ...),
                   tags = c("Tree-Based Model", "Rule-Based Model", "Implicit Feature Selection",
                   	       "Boosting", "Ensemble Model", "Cost Sensitive Learning", "Two Class Only", 
                            "Handle Missing Predictor Data", "Accepts Case Weights"),
diff --git a/models/files/C5.0Rules.R b/models/files/C5.0Rules.R
index d5453ca2a..b149183c1 100644
--- a/models/files/C5.0Rules.R
+++ b/models/files/C5.0Rules.R
@@ -7,7 +7,7 @@ modelInfo <- list(label = "Single C5.0 Ruleset",
                                           label = c('none')),
                   grid = function(x, y, len = NULL, search = "grid") data.frame(parameter = "none"),
                   fit = function(x, y, wts, param, lev, last, classProbs, ...) 
-                    C50::C5.0(x = x, y = y, weights = wts, rules = TRUE, ...),
+                    C50:::C5.0.default(x = x, y = y, weights = wts, rules = TRUE, ...),
                   predict = function(modelFit, newdata, submodels = NULL) 
                     predict(modelFit, newdata),
                   prob = function(modelFit, newdata, submodels = NULL) 
@@ -17,7 +17,7 @@ modelInfo <- list(label = "Single C5.0 Ruleset",
                     rownames(vars)[vars$Overall > 0]
                   },
                   levels = function(x) x$obsLevels,
-                  varImp = function(object, ...) C5imp(object, ...),
+                  varImp = function(object, ...) C50::C5imp(object, ...),
                   tags = c("Rule-Based Model", "Implicit Feature Selection", "Handle Missing Predictor Data", "Accepts Case Weights"),
                   trim = function(x) {
                     x$boostResults <- NULL
diff --git a/models/files/C5.0Tree.R b/models/files/C5.0Tree.R
index 88699bd8d..2258cd6c5 100644
--- a/models/files/C5.0Tree.R
+++ b/models/files/C5.0Tree.R
@@ -7,7 +7,7 @@ modelInfo <- list(label = "Single C5.0 Tree",
                                           label = c('none')),
                   grid = function(x, y, len = NULL, search = "grid") data.frame(parameter = "none"),
                   fit = function(x, y, wts, param, lev, last, classProbs, ...) 
-                    C50::C5.0(x = x, y = y, weights = wts, ...),
+                    C50:::C5.0.default(x = x, y = y, weights = wts, ...),
                   predict = function(modelFit, newdata, submodels = NULL) 
                     predict(modelFit, newdata),
                   prob = function(modelFit, newdata, submodels = NULL) 
@@ -17,7 +17,7 @@ modelInfo <- list(label = "Single C5.0 Tree",
                     rownames(vars)[vars$Overall > 0]
                   },
                   levels = function(x) x$obsLevels,
-                  varImp = function(object, ...) C5imp(object, ...),
+                  varImp = function(object, ...) C50::C5imp(object, ...),
                   tags = c("Tree-Based Model", "Implicit Feature Selection", 
                            "Handle Missing Predictor Data", "Accepts Case Weights"),
                   sort = function(x) x[order(x[,1]),],
diff --git a/pkg/caret/inst/models/models.RData b/pkg/caret/inst/models/models.RData
index 8388771dc..acbf21fc1 100644
Binary files a/pkg/caret/inst/models/models.RData and b/pkg/caret/inst/models/models.RData differ