diff '--color=auto' -ur '--color=never' a/tests/libqtdbustest/TestDBusTestRunner.cpp b/tests/libqtdbustest/TestDBusTestRunner.cpp
--- a/tests/libqtdbustest/TestDBusTestRunner.cpp	2023-01-20 21:36:16.948292559 +0100
+++ b/tests/libqtdbustest/TestDBusTestRunner.cpp	2023-01-20 21:55:40.554530221 +0100
@@ -44,7 +44,7 @@
 TEST_F(TestDBusTestRunner, StartsSessionService) {
 	QSharedPointer<QProcessDBusService> process(
 			new QProcessDBusService("test.session.name",
-					QDBusConnection::SessionBus, "/usr/bin/python3",
+					QDBusConnection::SessionBus, "python3",
 					QStringList() << "-m" << "dbusmock" << "test.session.name"
 							<< "/test/object" << "test.Interface"));
 
@@ -58,15 +58,14 @@
 	pgrep.waitForFinished();
 	pgrep.waitForReadyRead();
 
-	EXPECT_EQ(
-			"/usr/bin/python3 -m dbusmock test.session.name /test/object test.Interface",
-			QString::fromUtf8(pgrep.readAll().trimmed()).toStdString());
+	EXPECT_TRUE(
+			pgrep.readAll().contains("python3 -m dbusmock test.session.name /test/object test.Interface"));
 }
 
 TEST_F(TestDBusTestRunner, StartsSystemService) {
 	QSharedPointer<QProcessDBusService> process(
 			new QProcessDBusService("test.system.name",
-					QDBusConnection::SystemBus, "/usr/bin/python3",
+					QDBusConnection::SystemBus, "python3",
 					QStringList() << "-m" << "dbusmock" << "-s"
 							<< "test.system.name" << "/test/object"
 							<< "test.Interface"));
@@ -81,9 +80,8 @@
 	pgrep.waitForFinished();
 	pgrep.waitForReadyRead();
 
-	EXPECT_EQ(
-			"/usr/bin/python3 -m dbusmock -s test.system.name /test/object test.Interface",
-			QString::fromUtf8(pgrep.readAll().trimmed()).toStdString());
+	EXPECT_TRUE(
+			pgrep.readAll().contains("python3 -m dbusmock -s test.system.name /test/object test.Interface"));
 }
 
 TEST_F(TestDBusTestRunner, SetsEnvironmentVariables) {
diff '--color=auto' -ur '--color=never' a/tests/libqtdbustest/TestQProcessDBusService.cpp b/tests/libqtdbustest/TestQProcessDBusService.cpp
--- a/tests/libqtdbustest/TestQProcessDBusService.cpp	2023-01-20 21:36:16.948292559 +0100
+++ b/tests/libqtdbustest/TestQProcessDBusService.cpp	2023-01-20 21:54:34.633384937 +0100
@@ -45,7 +45,7 @@
 
 TEST_F(TestQProcessDBusService, WaitsForServiceAppeared) {
 	QProcessDBusService process("test.name", QDBusConnection::SessionBus,
-			"/usr/bin/python3",
+			"python3",
 			QStringList() << "-m" << "dbusmock" << "test.name" << "/test/object"
 					<< "test.Interface");
 
@@ -58,14 +58,13 @@
 	pgrep.waitForFinished();
 	pgrep.waitForReadyRead();
 
-	EXPECT_EQ(
-			"/usr/bin/python3 -m dbusmock test.name /test/object test.Interface",
-			QString::fromUtf8(pgrep.readAll().trimmed()).toStdString());
+	EXPECT_TRUE(
+			pgrep.readAll().contains("python3 -m dbusmock test.name /test/object test.Interface"));
 }
 
 TEST_F(TestQProcessDBusService, ThrowsErrorForFailToStart) {
 	QProcessDBusService process("test.name", QDBusConnection::SessionBus,
-			"/usr/bin/python3",
+			"python3",
 			QStringList() << "-m" << "dbusmock" << "not.test.name"
 					<< "/test/object" << "test.Interface");
 
diff '--color=auto' -ur '--color=never' a/tests/libqtdbustest/TestSuicidalProcess.cpp b/tests/libqtdbustest/TestSuicidalProcess.cpp
--- a/tests/libqtdbustest/TestSuicidalProcess.cpp	2023-01-20 21:36:16.948292559 +0100
+++ b/tests/libqtdbustest/TestSuicidalProcess.cpp	2023-01-20 21:55:07.219951081 +0100
@@ -51,9 +51,7 @@
 	pgrep.waitForFinished();
 	pgrep.waitForReadyRead();

-	EXPECT_TRUE(QString::fromUtf8(pgrep.readAll().trimmed())
-                .toStdString()
-                .find("sleep 5") != std::string::npos);
+	EXPECT_TRUE(pgrep.readAll().contains("sleep 5"));
 }
 
 } // namespace