diff --git a/internal/interpreters/r_test.go b/internal/interpreters/r_test.go
index 0abb27567..487dd4b74 100644
--- a/internal/interpreters/r_test.go
+++ b/internal/interpreters/r_test.go
@@ -360,7 +360,7 @@ func (s *RSuite) TestResolveRExecutableWhenPassedInPathExistsButNotValid() {
 
 	err := interpreter.resolveRExecutable()
 	s.Error(err)
-	s.Equal("couldn't parse R version from command output (/Users/billsager/dev/publishing-client-another/internal/interpreters/some/R --version)", err.Error())
+	s.Equal(true, strings.Contains(err.Error(), "couldn't parse R version from command output"))
 	s.Equal(false, interpreter.IsRExecutableValid())
 }
 
diff --git a/internal/publish/publish_test.go b/internal/publish/publish_test.go
index 83ffdb748..e3c1bfd69 100644
--- a/internal/publish/publish_test.go
+++ b/internal/publish/publish_test.go
@@ -16,6 +16,7 @@ import (
 	"github.com/posit-dev/publisher/internal/deployment"
 	"github.com/posit-dev/publisher/internal/events"
 	"github.com/posit-dev/publisher/internal/inspect/dependencies/renv"
+	"github.com/posit-dev/publisher/internal/interpreters"
 	"github.com/posit-dev/publisher/internal/logging"
 	"github.com/posit-dev/publisher/internal/logging/loggingtest"
 	"github.com/posit-dev/publisher/internal/project"
@@ -111,6 +112,14 @@ func (s *PublishSuite) SetupTest() {
 	cwd.Join("requirements.txt").WriteFile([]byte("flask\n"), 0600)
 	cwd.Join("renv.lock").WriteFile([]byte(renvLockContent), 0600)
 
+	interpreters.NewRInterpreter = func(baseDir util.AbsolutePath, rExec util.Path, log logging.Logger) interpreters.RInterpreter {
+		i := interpreters.NewMockRInterpreter()
+		i.On("Init").Return(nil)
+		i.On("RequiresR", mock.Anything).Return(false, nil)
+		i.On("GetLockFilePath").Return(util.RelativePath{}, false, nil)
+		return i
+	}
+
 }
 
 func (s *PublishSuite) TestNewFromState() {