diff --git a/src/vs/editor/contrib/parameterHints/browser/parameterHints.css b/src/vs/editor/contrib/parameterHints/browser/parameterHints.css
index 3efac6c122c..fba0ae5e34e 100644
--- a/src/vs/editor/contrib/parameterHints/browser/parameterHints.css
+++ b/src/vs/editor/contrib/parameterHints/browser/parameterHints.css
@@ -76,6 +76,9 @@
 .monaco-editor .parameter-hints-widget .docs {
 	padding: 0 10px 0 5px;
 	white-space: pre-wrap;
+	overflow-wrap: break-word;
+	word-break: break-word;
+	min-width: 0;
 }
 
 .monaco-editor .parameter-hints-widget .docs.empty {
@@ -93,6 +96,9 @@
 
 .monaco-editor .parameter-hints-widget .docs .markdown-docs {
 	white-space: initial;
+	overflow-wrap: break-word;
+	word-break: break-word;
+	max-width: 100%;
 }
 
 .monaco-editor .parameter-hints-widget .docs code {