diff --git a/src/main/java/com/google/gerrit/plugins/checks/client/Checkers.java b/src/main/java/com/google/gerrit/plugins/checks/client/Checkers.java
index bd4f930f..0dda6298 100644
--- a/src/main/java/com/google/gerrit/plugins/checks/client/Checkers.java
+++ b/src/main/java/com/google/gerrit/plugins/checks/client/Checkers.java
@@ -103,7 +103,9 @@ private URI buildRequestUrl() throws URISyntaxException {
 
   private URI buildRequestUrl(String suffixPath) throws URISyntaxException {
     return uriBuilder
-        .setPath(String.format("%splugins/checks/checkers/%s", getPrefix(), suffixPath))
+        .setPath(
+            String.format(
+                "%splugins/checks/checkers/%s", uriBuilder.getPath() + getPrefix(), suffixPath))
         .build();
   }
 }
diff --git a/src/main/java/com/google/gerrit/plugins/checks/client/Checks.java b/src/main/java/com/google/gerrit/plugins/checks/client/Checks.java
index d1a04afe..edb77ea3 100644
--- a/src/main/java/com/google/gerrit/plugins/checks/client/Checks.java
+++ b/src/main/java/com/google/gerrit/plugins/checks/client/Checks.java
@@ -161,7 +161,7 @@ private URI buildRequestUrl(String suffixPath) throws URISyntaxException {
         .setPath(
             String.format(
                 "%schanges/%d/revisions/%d/checks/%s",
-                getPrefix(), changeNumber, patchSetNumber, suffixPath))
+                uriBuilder.getPath() + getPrefix(), changeNumber, patchSetNumber, suffixPath))
         .build();
   }
 }
diff --git a/src/main/java/com/google/gerrit/plugins/checks/client/PendingChecks.java b/src/main/java/com/google/gerrit/plugins/checks/client/PendingChecks.java
index 8ca91d9d..59c5b4ec 100644
--- a/src/main/java/com/google/gerrit/plugins/checks/client/PendingChecks.java
+++ b/src/main/java/com/google/gerrit/plugins/checks/client/PendingChecks.java
@@ -82,6 +82,6 @@ private URI buildRequestUrl() throws URISyntaxException {
       }
       uriBuilder.setParameter("query", queryString.toString());
     }
-    return uriBuilder.setPath(getPrefix() + PENDING_CHECKS_PATH).build();
+    return uriBuilder.setPath(uriBuilder.getPath() + getPrefix() + PENDING_CHECKS_PATH).build();
   }
 }
diff --git a/src/test/java/jenkins/plugins/gerrit/workflow/GerritCheckStepTest.java b/src/test/java/jenkins/plugins/gerrit/workflow/GerritCheckStepTest.java
index 4aae7bf5..1d4637c9 100644
--- a/src/test/java/jenkins/plugins/gerrit/workflow/GerritCheckStepTest.java
+++ b/src/test/java/jenkins/plugins/gerrit/workflow/GerritCheckStepTest.java
@@ -81,7 +81,7 @@ public void gerritCheckStepInvokeFailSSLValidationTest() throws Exception {
                 ""
                     + "node {\n"
                     + "  withEnv([\n"
-                    + "    'GERRIT_API_URL=https://%s:%s/a/project',\n"
+                    + "    'GERRIT_API_URL=https://%s:%s',\n"
                     + "    'GERRIT_CREDENTIALS_ID=cid',\n"
                     + "    'BRANCH_NAME=%s',\n"
                     + "  ]) {\n"
@@ -125,7 +125,7 @@ public void gerritCheckStepInvokeTest() throws Exception {
                 ""
                     + "node {\n"
                     + "  withEnv([\n"
-                    + "    'GERRIT_API_URL=https://%s:%s/a/project',\n"
+                    + "    'GERRIT_API_URL=https://%s:%s',\n"
                     + "    'GERRIT_API_INSECURE_HTTPS=true',\n"
                     + "    'GERRIT_CREDENTIALS_ID=cid',\n"
                     + "    'BRANCH_NAME=%s',\n"
@@ -184,7 +184,7 @@ public void gerritCheckStepTestWithUrlSet() throws Exception {
                 ""
                     + "node {\n"
                     + "  withEnv([\n"
-                    + "    'GERRIT_API_URL=https://%s:%s/a/project',\n"
+                    + "    'GERRIT_API_URL=https://%s:%s',\n"
                     + "    'GERRIT_API_INSECURE_HTTPS=true',\n"
                     + "    'GERRIT_CREDENTIALS_ID=cid',\n"
                     + "    'BRANCH_NAME=%s',\n"
@@ -242,7 +242,7 @@ public void gerritCheckStepTestProducesUtcTimestamps() throws Exception {
                 ""
                     + "node {\n"
                     + "  withEnv([\n"
-                    + "    'GERRIT_API_URL=https://%s:%s/a/project',\n"
+                    + "    'GERRIT_API_URL=https://%s:%s',\n"
                     + "    'GERRIT_API_INSECURE_HTTPS=true',\n"
                     + "    'GERRIT_CREDENTIALS_ID=cid',\n"
                     + "    'BRANCH_NAME=%s',\n"