diff --git a/maps-kt-core/src/commonMain/kotlin/center/sciprog/maps/coordinates/GmcCurve.kt b/maps-kt-core/src/commonMain/kotlin/center/sciprog/maps/coordinates/GmcCurve.kt
index c13f51e..d528831 100644
--- a/maps-kt-core/src/commonMain/kotlin/center/sciprog/maps/coordinates/GmcCurve.kt
+++ b/maps-kt-core/src/commonMain/kotlin/center/sciprog/maps/coordinates/GmcCurve.kt
@@ -88,6 +88,7 @@ public fun GeoEllipsoid.parallelCurve(latitude: Angle, fromLongitude: Angle, toL
  * @param start starting location
  * @return solution to the direct geodetic problem
  */
+@Suppress("SpellCheckingInspection", "LocalVariableName")
 public fun GeoEllipsoid.curveInDirection(
     start: GmcPose,
     distance: Distance,
@@ -210,6 +211,7 @@ public fun GeoEllipsoid.curveInDirection(
  * @param end ending coordinates
  * @return solution to the inverse geodetic problem
  */
+@Suppress("SpellCheckingInspection", "LocalVariableName")
 public fun GeoEllipsoid.curveBetween(start: GMC, end: GMC, precision: Double = 1e-6): GmcCurve {
     //
     // All equation numbers refer back to Vincenty's publication:
diff --git a/maps-kt-core/src/commonTest/kotlin/center/sciprog/maps/coordinates/DistanceTest.kt b/maps-kt-core/src/commonTest/kotlin/center/sciprog/maps/coordinates/DistanceTest.kt
index 2e5cf03..1a8a561 100644
--- a/maps-kt-core/src/commonTest/kotlin/center/sciprog/maps/coordinates/DistanceTest.kt
+++ b/maps-kt-core/src/commonTest/kotlin/center/sciprog/maps/coordinates/DistanceTest.kt
@@ -27,11 +27,19 @@ internal class DistanceTest {
     }
 
     @Test
-    fun largeDistance() {
+    fun curveBetween() {
         val curve = GeoEllipsoid.WGS84.curveBetween(moscow, spb)
         val distance = curve.distance
 
-        assertEquals(632.035426877, distance.kilometers, 0.1)
+        assertEquals(632.035426877, distance.kilometers, 0.0001)
+    }
 
+    @Test
+    fun curveInDirection() {
+        val curve = GeoEllipsoid.WGS84.curveInDirection(
+            GmcPose(moscow, (-0.6947937116552751).radians), Distance(632.035426877)
+        )
+
+        assertEquals(spb.latitude.radians.value,curve.backward.latitude.radians.value, 0.0001)
     }
 }
\ No newline at end of file