diff --git a/.changeset/fix-vitest-workspace-environment.md b/.changeset/fix-vitest-workspace-environment.md
new file mode 100644
index 0000000..f036d4b
--- /dev/null
+++ b/.changeset/fix-vitest-workspace-environment.md
@@ -0,0 +1,5 @@
+---
+'vite-plugin-solid': patch
+---
+
+Avoid overriding environments configured in Vitest workspaces and projects with the `jsdom` default
diff --git a/src/index.ts b/src/index.ts
index ead2980..1b41941 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -238,7 +238,7 @@ export default function solidPlugin(options: Partial<Options> = {}): Plugin {
             ? [userTest.setupFiles]
             : userTest.setupFiles || [];
 
-        if (!userTest.environment && !options.ssr) {
+        if (!userTest.environment && !userTest.workspace && !userTest.projects && !options.ssr) {
           test.environment = 'jsdom';
         }