diff --git a/entrypoint.sh b/entrypoint.sh
index 7204a9d..486bd3a 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -11,19 +11,19 @@ else
   SONAR_PASSWORD=""
 fi
 
-if [[ -f "${INPUT_PROJECTBASEDIR%/}pom.xml" ]]; then
+if [[ -f "${INPUT_PROJECTBASEDIR%/}/pom.xml" ]]; then
   echo "::error file=${INPUT_PROJECTBASEDIR%/}pom.xml::Maven project detected. You should run the goal 'org.sonarsource.scanner.maven:sonar' during build rather than using this GitHub Action."
   exit 1
 fi
 
-if [[ -f "${INPUT_PROJECTBASEDIR%/}build.gradle" ]]; then
+if [[ -f "${INPUT_PROJECTBASEDIR%/}/build.gradle" ]]; then
   echo "::error file=${INPUT_PROJECTBASEDIR%/}build.gradle::Gradle project detected. You should use the SonarQube plugin for Gradle during build rather than using this GitHub Action."
   exit 1
 fi
 
 unset JAVA_HOME
 
-if [[ ! -f "${INPUT_PROJECTBASEDIR%/}sonar-project.properties" ]]; then
+if [[ ! -f "${INPUT_PROJECTBASEDIR%/}/sonar-project.properties" ]]; then
   [[ -z "${INPUT_PROJECTKEY}" ]] && SONAR_PROJECTKEY="${REPOSITORY_NAME}" || SONAR_PROJECTKEY="${INPUT_PROJECTKEY}"
   [[ -z "${INPUT_PROJECTNAME}" ]] && SONAR_PROJECTNAME="${REPOSITORY_NAME}" || SONAR_PROJECTNAME="${INPUT_PROJECTNAME}"
   [[ -z "${INPUT_PROJECTVERSION}" ]] && SONAR_PROJECTVERSION="" || SONAR_PROJECTVERSION="${INPUT_PROJECTVERSION}"