diff --git a/packages/react-client/src/ReactFlightClientDevToolsHook.js b/packages/react-client/src/ReactFlightClientDevToolsHook.js
index b8ca649d4de45..4f5a716eb32f4 100644
--- a/packages/react-client/src/ReactFlightClientDevToolsHook.js
+++ b/packages/react-client/src/ReactFlightClientDevToolsHook.js
@@ -30,7 +30,7 @@ export function injectInternals(internals: Object): boolean {
   } catch (err) {
     // Catch all errors because it is unsafe to throw during initialization.
     if (__DEV__) {
-      console.error('React instrumentation encountered an error: %s.', err);
+      console.error('React instrumentation encountered an error: %o.', err);
     }
   }
   if (hook.checkDCE) {
diff --git a/packages/react-devtools-shared/src/__tests__/setupTests.js b/packages/react-devtools-shared/src/__tests__/setupTests.js
index 50431b230ad87..610191fb2cdb8 100644
--- a/packages/react-devtools-shared/src/__tests__/setupTests.js
+++ b/packages/react-devtools-shared/src/__tests__/setupTests.js
@@ -141,7 +141,7 @@ function patchConsoleForTestingBeforeHookInstallation() {
       // if they use this code path.
       firstArg = firstArg.slice(9);
     }
-    if (firstArg === 'React instrumentation encountered an error: %s') {
+    if (firstArg === 'React instrumentation encountered an error: %o') {
       // Rethrow errors from React.
       throw args[1];
     } else if (
diff --git a/packages/react-devtools-shared/src/backend/fiber/renderer.js b/packages/react-devtools-shared/src/backend/fiber/renderer.js
index e75b840a5af5e..1eee4a3ad8a1c 100644
--- a/packages/react-devtools-shared/src/backend/fiber/renderer.js
+++ b/packages/react-devtools-shared/src/backend/fiber/renderer.js
@@ -2935,7 +2935,7 @@ export function attach(
       }
       if (suspenseNode.parent !== parentNode) {
         throw new Error(
-          'Cannot remove a node from a different parent than is being reconciled.',
+          'Cannot remove a Suspense node from a different parent than is being reconciled.',
         );
       }
       let previousSuspenseSibling = remainingReconcilingChildrenSuspenseNodes;
diff --git a/packages/react-reconciler/src/ReactFiberDevToolsHook.js b/packages/react-reconciler/src/ReactFiberDevToolsHook.js
index dc357f1ac1aad..975c97d1b6554 100644
--- a/packages/react-reconciler/src/ReactFiberDevToolsHook.js
+++ b/packages/react-reconciler/src/ReactFiberDevToolsHook.js
@@ -78,7 +78,7 @@ export function injectInternals(internals: Object): boolean {
   } catch (err) {
     // Catch all errors because it is unsafe to throw during initialization.
     if (__DEV__) {
-      console.error('React instrumentation encountered an error: %s.', err);
+      console.error('React instrumentation encountered an error: %o.', err);
     }
   }
   if (hook.checkDCE) {
@@ -101,7 +101,7 @@ export function onScheduleRoot(root: FiberRoot, children: ReactNodeList) {
       } catch (err) {
         if (__DEV__ && !hasLoggedError) {
           hasLoggedError = true;
-          console.error('React instrumentation encountered an error: %s', err);
+          console.error('React instrumentation encountered an error: %o', err);
         }
       }
     }
@@ -144,7 +144,7 @@ export function onCommitRoot(root: FiberRoot, eventPriority: EventPriority) {
       if (__DEV__) {
         if (!hasLoggedError) {
           hasLoggedError = true;
-          console.error('React instrumentation encountered an error: %s', err);
+          console.error('React instrumentation encountered an error: %o', err);
         }
       }
     }
@@ -162,7 +162,7 @@ export function onPostCommitRoot(root: FiberRoot) {
       if (__DEV__) {
         if (!hasLoggedError) {
           hasLoggedError = true;
-          console.error('React instrumentation encountered an error: %s', err);
+          console.error('React instrumentation encountered an error: %o', err);
         }
       }
     }
@@ -177,7 +177,7 @@ export function onCommitUnmount(fiber: Fiber) {
       if (__DEV__) {
         if (!hasLoggedError) {
           hasLoggedError = true;
-          console.error('React instrumentation encountered an error: %s', err);
+          console.error('React instrumentation encountered an error: %o', err);
         }
       }
     }
@@ -199,7 +199,7 @@ export function setIsStrictModeForDevtools(newIsStrictMode: boolean) {
       if (__DEV__) {
         if (!hasLoggedError) {
           hasLoggedError = true;
-          console.error('React instrumentation encountered an error: %s', err);
+          console.error('React instrumentation encountered an error: %o', err);
         }
       }
     }