diff --git a/services/web/app/src/Features/Compile/CompileController.mjs b/services/web/app/src/Features/Compile/CompileController.mjs
index a5f9a03cf4..7e361bac84 100644
--- a/services/web/app/src/Features/Compile/CompileController.mjs
+++ b/services/web/app/src/Features/Compile/CompileController.mjs
@@ -392,8 +392,8 @@ const proxySyncPdfSchema = z.object({
   }),
   query: z.object({
     page: z.string().regex(/^\d+$/),
-    h: z.string().regex(/^-?\d+\.\d+$/),
-    v: z.string().regex(/^-?\d+\.\d+$/),
+    h: z.string().regex(/^-?\d+(\.\d+)?$/),
+    v: z.string().regex(/^-?\d+(\.\d+)?$/),
     ...syncTeXBaseQuery,
   }),
 })
@@ -835,10 +835,10 @@ const _CompileController = {
     if (!page?.match(/^\d+$/)) {
       throw new Error('invalid page parameter')
     }
-    if (!h?.match(/^-?\d+\.\d+$/)) {
+    if (!h?.match(/^-?\d+(\.\d+)?$/)) {
       throw new Error('invalid h parameter')
     }
-    if (!v?.match(/^-?\d+\.\d+$/)) {
+    if (!v?.match(/^-?\d+(\.\d+)?$/)) {
       throw new Error('invalid v parameter')
     }
     await _syncTeX(
diff --git a/services/web/test/unit/src/Compile/CompileController.test.mjs b/services/web/test/unit/src/Compile/CompileController.test.mjs
index 8fcfdb80a4..7dd595efd1 100644
--- a/services/web/test/unit/src/Compile/CompileController.test.mjs
+++ b/services/web/test/unit/src/Compile/CompileController.test.mjs
@@ -1196,6 +1196,57 @@ describe('CompileController', function () {
       ctx.CompileManager.promises.syncTeX.should.have.been.calledOnce
     })
 
+    it('should accept integer h and v values with no fractional part', async function (ctx) {
+      ctx.req.query.h = '5'
+      ctx.req.query.v = '-5'
+      ctx.next = sinon.stub()
+      await ctx.CompileController.proxySyncPdf(ctx.req, ctx.res, ctx.next)
+      ctx.next.should.not.have.been.called
+      ctx.CompileManager.promises.syncTeX.should.have.been.calledWith(
+        ctx.projectId,
+        ctx.user_id,
+        sinon.match({
+          validatedOptions: sinon.match({ h: '5', v: '-5' }),
+        })
+      )
+    })
+
+    it('should reject a non-numeric h value', async function (ctx) {
+      ctx.req.query.h = 'not-a-number'
+      ctx.next = sinon.stub()
+      await ctx.CompileController.proxySyncPdf(ctx.req, ctx.res, ctx.next)
+      ctx.next.should.have.been.calledWithMatch({
+        name: 'InvalidRequestError',
+        zodError: asZodError({
+          origin: 'string',
+          code: 'invalid_format',
+          format: 'regex',
+          pattern: '/^-?\\d+(\\.\\d+)?$/',
+          path: ['query', 'h'],
+          message: 'Invalid string: must match pattern /^-?\\d+(\\.\\d+)?$/',
+        }),
+      })
+      ctx.CompileManager.promises.syncTeX.should.have.been.calledOnce
+    })
+
+    it('should reject a non-numeric v value', async function (ctx) {
+      ctx.req.query.v = 'not-a-number'
+      ctx.next = sinon.stub()
+      await ctx.CompileController.proxySyncPdf(ctx.req, ctx.res, ctx.next)
+      ctx.next.should.have.been.calledWithMatch({
+        name: 'InvalidRequestError',
+        zodError: asZodError({
+          origin: 'string',
+          code: 'invalid_format',
+          format: 'regex',
+          pattern: '/^-?\\d+(\\.\\d+)?$/',
+          path: ['query', 'v'],
+          message: 'Invalid string: must match pattern /^-?\\d+(\\.\\d+)?$/',
+        }),
+      })
+      ctx.CompileManager.promises.syncTeX.should.have.been.calledOnce
+    })
+
     describe('when the schema is in log-only mode', function () {
       beforeEach(function () {
         setReqValidationModeForTests('log')