diff --git a/devtools/client/webide/test/test_build.html b/devtools/client/webide/test/test_build.html
index b5acb58c67bc..ffb01998c6d0 100644
--- a/devtools/client/webide/test/test_build.html
+++ b/devtools/client/webide/test/test_build.html
@@ -40,8 +40,11 @@
 
             let packagedAppLocation = getTestFilePath("build_app" + testSuffix + "1");
 
+            let onValidated = waitForUpdate(win, "project-validated");
+            let onDetails = waitForUpdate(win, "details");
             yield winProject.projectList.importPackagedApp(packagedAppLocation);
-            yield waitForUpdate(win, "details");
+            yield onValidated;
+            yield onDetails;
 
             let project = win.AppManager.selectedProject;
 
@@ -77,8 +80,11 @@
             // # Now test a full featured package.json
             packagedAppLocation = getTestFilePath("build_app" + testSuffix + "2");
 
+            onValidated = waitForUpdate(win, "project-validated");
+            onDetails = waitForUpdate(win, "details");
             yield winProject.projectList.importPackagedApp(packagedAppLocation);
-            yield waitForUpdate(win, "project-validated");
+            yield onValidated;
+            yield onDetails;
 
             project = win.AppManager.selectedProject;
 
@@ -96,8 +102,11 @@
             is(loggedMessages[3], "succeed", "log messages are correct");
 
             // Switch to the package dir in order to verify the generated webapp.manifest
+            onValidated = waitForUpdate(win, "project-validated");
+            onDetails = waitForUpdate(win, "details");
             yield winProject.projectList.importPackagedApp(packageDir);
-            yield waitForUpdate(win, "project-validated");
+            yield onValidated;
+            yield onDetails;
 
             project = win.AppManager.selectedProject;
 
diff --git a/devtools/client/webide/test/test_duplicate_import.html b/devtools/client/webide/test/test_duplicate_import.html
index 456778aa78cc..ef01e23e448d 100644
--- a/devtools/client/webide/test/test_duplicate_import.html
+++ b/devtools/client/webide/test/test_duplicate_import.html
@@ -27,19 +27,21 @@
           yield win.AppProjects.load();
           is(win.AppProjects.projects.length, 0, "IDB is empty");
 
-          info("to call importPackagedApp(" + packagedAppLocation + ")");
+          let onValidated = waitForUpdate(win, "project-validated");
+          let onDetails = waitForUpdate(win, "details");
           yield winProject.projectList.importPackagedApp(packagedAppLocation);
-          yield waitForUpdate(win, "project-validated");
-          yield nextTick();
+          yield onValidated;
+          yield onDetails;
 
-          info("to call importHostedApp(" + hostedAppManifest + ")");
           yield winProject.projectList.importHostedApp(hostedAppManifest);
           yield waitForUpdate(win, "project-validated");
           yield nextTick();
 
-          info("to call importPackagedApp(" + packagedAppLocation + ") again");
+          onValidated = waitForUpdate(win, "project-validated");
+          onDetails = waitForUpdate(win, "details");
           yield winProject.projectList.importPackagedApp(packagedAppLocation);
-          yield waitForUpdate(win, "project-validated");
+          yield onValidated;
+          yield onDetails;
 
           let project = win.AppManager.selectedProject;
           is(project.location, packagedAppLocation, "Correctly reselected existing packaged app.");
diff --git a/devtools/client/webide/test/test_runtime.html b/devtools/client/webide/test/test_runtime.html
index ccde517be3fe..496e8c8b5b96 100644
--- a/devtools/client/webide/test/test_runtime.html
+++ b/devtools/client/webide/test/test_runtime.html
@@ -90,8 +90,11 @@
 
           let packagedAppLocation = getTestFilePath("app");
 
+          let onValidated = waitForUpdate(win, "project-validated");
+          let onDetails = waitForUpdate(win, "details");
           yield winProject.projectList.importPackagedApp(packagedAppLocation);
-          yield waitForUpdate(win, "project-validated");
+          yield onValidated;
+          yield onDetails;
 
           let panelNode = docRuntime.querySelector("#runtime-panel");
           let items = panelNode.querySelectorAll(".runtime-panel-item-usb");
diff --git a/devtools/client/webide/test/test_telemetry.html b/devtools/client/webide/test/test_telemetry.html
index 89a9761e6965..225ddb89b370 100644
--- a/devtools/client/webide/test/test_telemetry.html
+++ b/devtools/client/webide/test/test_telemetry.html
@@ -120,8 +120,11 @@
         return Task.spawn(function*() {
           let packagedAppLocation = getTestFilePath("../app");
           let winProject = getProjectWindow(win);
+          let onValidated = waitForUpdate(win, "project-validated");
+          let onDetails = waitForUpdate(win, "details");
           yield winProject.projectList.importPackagedApp(packagedAppLocation);
-          yield waitForUpdate(win, "project-validated");
+          yield onValidated;
+          yield onDetails;
         });
       }