diff --git a/code/IFCLoader.cpp b/code/IFCLoader.cpp
index 1cc18fc3f..ff4eb4b1f 100644
--- a/code/IFCLoader.cpp
+++ b/code/IFCLoader.cpp
@@ -153,10 +153,8 @@ const aiImporterDesc* IFCImporter::GetInfo () const
 void IFCImporter::SetupProperties(const Importer* pImp)
 {
     settings.skipSpaceRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS,true);
-    settings.skipCurveRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS,true);
     settings.useCustomTriangulation = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_CUSTOM_TRIANGULATION,true);
-
-    settings.conicSamplingAngle = 10.f;
+    settings.conicSamplingAngle = pImp->GetPropertyFloat(AI_CONFIG_IMPORT_IFC_CONIC_SAMPLING_ANGLE, AI_IMPORT_IFC_DEFAULT_CONIC_SAMPLING_ANGLE);
     settings.skipAnnotations = true;
 }
 
diff --git a/code/IFCLoader.h b/code/IFCLoader.h
index e301a329d..70a7b1685 100644
--- a/code/IFCLoader.h
+++ b/code/IFCLoader.h
@@ -107,7 +107,6 @@ public:
     {
         Settings()
             : skipSpaceRepresentations()
-            , skipCurveRepresentations()
             , useCustomTriangulation()
             , skipAnnotations()
             , conicSamplingAngle(10.f)
@@ -115,7 +114,6 @@ public:
 
 
         bool skipSpaceRepresentations;
-        bool skipCurveRepresentations;
         bool useCustomTriangulation;
         bool skipAnnotations;
         float conicSamplingAngle;
diff --git a/include/assimp/config.h.in b/include/assimp/config.h.in
index 148a68868..e1af72bbb 100644
--- a/include/assimp/config.h.in
+++ b/include/assimp/config.h.in
@@ -844,14 +844,6 @@ enum aiComponent
 #define AI_CONFIG_IMPORT_OGRE_TEXTURETYPE_FROM_FILENAME \
     "IMPORT_OGRE_TEXTURETYPE_FROM_FILENAME"
 
-/** @brief Specifies whether the IFC loader skips over IfcSpace elements.
- *
- * IfcSpace elements (and their geometric representations) are used to
- * represent, well, free space in a building storey.<br>
- * Property type: Bool. Default value: true.
- */
-#define AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS "IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS"
-
  /** @brief Specifies whether the Android JNI asset extraction is supported.
   *
   * Turn on this option if you want to manage assets in native
@@ -860,17 +852,13 @@ enum aiComponent
   */
  #define AI_CONFIG_ANDROID_JNI_ASSIMP_MANAGER_SUPPORT "AI_CONFIG_ANDROID_JNI_ASSIMP_MANAGER_SUPPORT"
 
-
-// ---------------------------------------------------------------------------
-/** @brief Specifies whether the IFC loader skips over
- *    shape representations of type 'Curve2D'.
+/** @brief Specifies whether the IFC loader skips over IfcSpace elements.
  *
- * A lot of files contain both a faceted mesh representation and a outline
- * with a presentation type of 'Curve2D'. Currently Assimp doesn't convert those,
- * so turning this option off just clutters the log with errors.<br>
+ * IfcSpace elements (and their geometric representations) are used to
+ * represent, well, free space in a building storey.<br>
  * Property type: Bool. Default value: true.
  */
-#define AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS "IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS"
+#define AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS "IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS"
 
 // ---------------------------------------------------------------------------
 /** @brief Specifies whether the IFC loader will use its own, custom triangulation
@@ -887,6 +875,21 @@ enum aiComponent
  */
 #define AI_CONFIG_IMPORT_IFC_CUSTOM_TRIANGULATION "IMPORT_IFC_CUSTOM_TRIANGULATION"
 
+// ---------------------------------------------------------------------------
+ /** @brief  Set the tessellation conic angle for IFC curves.
+ *
+ * This is used by the IFC importer to determine the tessellation parameter
+ * for curves.
+ * @note The default value is AI_IMPORT_IFC_DEFAULT_CONIC_SAMPLING_ANGLE
+ * Property type: float.
+ */
+#define AI_CONFIG_IMPORT_IFC_CONIC_SAMPLING_ANGLE "IMPORT_IFC_CONIC_SAMPLING_ANGLE"
+
+// default value for AI_CONFIG_IMPORT_IFC_CONIC_SAMPLING_ANGLE
+#if (!defined AI_IMPORT_IFC_DEFAULT_CONIC_SAMPLING_ANGLE)
+#   define AI_IMPORT_IFC_DEFAULT_CONIC_SAMPLING_ANGLE 10.0f
+#endif
+
 // ---------------------------------------------------------------------------
 /** @brief Specifies whether the Collada loader will ignore the provided up direction.
  *