diff --git a/Changelog.md b/Changelog.md
index a09d476..aad7128 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,6 +1,7 @@
 # Changelog
 
 ## 0.5.900
+* decrease ggplot2 base_size from 12 to 10
 
 ## 0.4.900
 * decrease ggplot2 base_size from 14 to 12
diff --git a/R/ggplot-theme.R b/R/ggplot-theme.R
index a30e7d0..7db58bd 100644
--- a/R/ggplot-theme.R
+++ b/R/ggplot-theme.R
@@ -24,7 +24,7 @@
 #' @family themes ids
 #' @importFrom ggplot2 theme element_rect element_text element_line element_blank
 #' @export
-theme_ids <- function(base_size = 12,
+theme_ids <- function(base_size = 10,
                      base_family = idsBaseFontFamily,
                      style = c("default", "light", "dark"),
                      bgcolor = NULL) {
diff --git a/man/theme_ids.Rd b/man/theme_ids.Rd
index 8ce9941..e49f73d 100644
--- a/man/theme_ids.Rd
+++ b/man/theme_ids.Rd
@@ -5,7 +5,7 @@
 \title{IDS Theme for ggplot2}
 \usage{
 theme_ids(
-  base_size = 12,
+  base_size = 10,
   base_family = idsBaseFontFamily,
   style = c("default", "light", "dark"),
   bgcolor = NULL