diff --git a/src/gitlab/api.ts b/src/gitlab/api.ts
index 500307d..f88b46b 100644
--- a/src/gitlab/api.ts
+++ b/src/gitlab/api.ts
@@ -12,7 +12,7 @@ async function resolveGitlabApiToken(): Promise<string> {
   }
 
   if (process.env.GITLAB_API_TOKEN_FILE !== undefined) {
-    if (fs.existsSync(process.env.GITLAB_API_TOKEN_FILE)) {
+    if (!fs.existsSync(process.env.GITLAB_API_TOKEN_FILE)) {
       throw Error(`Gitlab API token file does not exist: ${process.env.GITLAB_API_TOKEN_FILE}`)
     }
     return (fs.readFileSync(process.env.GITLAB_API_TOKEN_FILE)).toString()
diff --git a/src/gitlab/scim.ts b/src/gitlab/scim.ts
index a6fbfd9..ef98fae 100644
--- a/src/gitlab/scim.ts
+++ b/src/gitlab/scim.ts
@@ -13,7 +13,7 @@ async function resolveGitlabScimToken(): Promise<string> {
   }
 
   if (process.env.GITLAB_SCIM_TOKEN_FILE !== undefined) {
-    if (fs.existsSync(process.env.GITLAB_SCIM_TOKEN_FILE)) {
+    if (!fs.existsSync(process.env.GITLAB_SCIM_TOKEN_FILE)) {
       throw Error(`Gitlab SCIM token file does not exist: ${process.env.GITLAB_SCIM_TOKEN_FILE}`)
     }
     return (fs.readFileSync(process.env.GITLAB_SCIM_TOKEN_FILE)).toString()
diff --git a/src/google/index.ts b/src/google/index.ts
index 6c2e773..26dba39 100644
--- a/src/google/index.ts
+++ b/src/google/index.ts
@@ -29,7 +29,7 @@ async function resolveGoogleServiceAcccount() {
   }
 
   if (process.env.GOOGLE_SA_KEY_FILE !== undefined) {
-    if (fs.existsSync(process.env.GOOGLE_SA_KEY_FILE)) {
+    if (!fs.existsSync(process.env.GOOGLE_SA_KEY_FILE)) {
       throw Error(`Google service account file does not exist: ${process.env.GOOGLE_SA_KEY_FILE}`)
     }
     return
diff --git a/src/utils/mappings.ts b/src/utils/mappings.ts
index 5b0d5cc..9f351a9 100644
--- a/src/utils/mappings.ts
+++ b/src/utils/mappings.ts
@@ -10,7 +10,7 @@ async function resolveMappings(): Promise<string> {
   }
 
   if (process.env.ROLE_MAPPINGS_FILE !== undefined) {
-    if (fs.existsSync(process.env.ROLE_MAPPINGS_FILE)) {
+    if (!fs.existsSync(process.env.ROLE_MAPPINGS_FILE)) {
       throw Error(`Role mappings file does not exist: ${process.env.ROLE_MAPPINGS_FILE}`)
     }
     return (fs.readFileSync(process.env.ROLE_MAPPINGS_FILE)).toString()