diff --git a/NEWS.md b/NEWS.md
index aecaa3af..78b068fc 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -40,8 +40,10 @@ where the formatting is also better._
     plot type internally coerces it to factor (e.g., `"boxplot"`)
 - `type_text()` can now also deal with factor `x`/`y` variables by converting
   them to numeric which helps to add text to barplots etc. (#470 @zeileis)
-- Fix bug where sourced (non-interactive) scripts with `tinytheme()` calls were
-  not inheriting the correct parameters and spacing. (#475, #481 @grantmcdermott)
+- Fixed some `tinytheme()` bugs.
+  - Sourced (non-interactive) scripts with `tinytheme()` calls now inherit the
+    correct parameters and spacing. (#475, #481 @grantmcdermott)
+  - Custom `cex` theme settings are now reset correctly. (#482 @grantmcdermott)
 
 
 ### Internals
diff --git a/R/tinytheme.R b/R/tinytheme.R
index 0eddd4da..9b59ad32 100644
--- a/R/tinytheme.R
+++ b/R/tinytheme.R
@@ -183,6 +183,7 @@ theme_default = list(
   adj.sub = par("adj"), # 0.5,
   bg = "white", # par("bg") # "white"
   bty = par("bty"), #"o",
+  cex = par("cex"), #1,
   cex.axis = par("cex.axis"), #1,
   cex.main = par("cex.main"), #1.2,
   cex.xlab = par("cex.axis"), #1,