diff --git a/R/utilities.R b/R/utilities.R
index 1fc2025..f52797e 100644
--- a/R/utilities.R
+++ b/R/utilities.R
@@ -64,7 +64,7 @@ GeomConfint <- ggplot2::ggproto('GeomConfint', ggplot2::GeomRibbon,
                                   if (na.rm) data <- data[stats::complete.cases(self$required_aes), ]
                                   data <- data[order(data$group, data$x), ]
                                   data <- self$stairstep_confint(data)
-                                  ggplot2:::GeomRibbon$draw_group(data, panel_scales, coord, na.rm = na.rm)
+                                  ggplot2::GeomRibbon$draw_group(data, panel_scales, coord, na.rm = na.rm)
                                 },
                                 stairstep_confint = function (data) {
                                   data <- as.data.frame(data)[order(data$x), ]
@@ -90,7 +90,7 @@ GeomConfint_old <- ggplot2::ggproto('GeomConfint_old', ggplot2::GeomRibbon,
 #                                   if (na.rm) data <- data[stats::complete.cases(self$required_aes), ]
 #                                   data <- data[order(data$group, data$x), ]
 #                                   data <- self$stairstep_confint(data)
-#                                   ggplot2:::GeomRibbon$draw_group(data, panel_scales, coord, na.rm = FALSE)
+#                                   ggplot2::GeomRibbon$draw_group(data, panel_scales, coord, na.rm = FALSE)
 #                                 },
 #                                 stairstep_confint = function (data) {
 #                                   data <- as.data.frame(data)[order(data$x), ]