diff --git a/xs/src/Config.cpp b/xs/src/Config.cpp
index 7c3280d5f..e1c520e61 100644
--- a/xs/src/Config.cpp
+++ b/xs/src/Config.cpp
@@ -22,7 +22,8 @@ ConfigBase::apply(const ConfigBase &other, bool ignore_nonexistent) {
         }
         
         // not the most efficient way, but easier than casting pointers to subclasses
-        my_opt->deserialize( other.option(*it)->serialize() );
+        bool res = my_opt->deserialize( other.option(*it)->serialize() );
+        if (!res) CONFESS("Unexpected failure when deserializing serialized value");
     }
 }
 
diff --git a/xs/src/Config.hpp b/xs/src/Config.hpp
index 5b4cb8284..e6832cf55 100644
--- a/xs/src/Config.hpp
+++ b/xs/src/Config.hpp
@@ -265,8 +265,14 @@ class ConfigOptionPoint : public ConfigOption
     };
     
     bool deserialize(std::string str) {
-        int res = sscanf(str.c_str(), "%lf%*1[,x]%lf", &this->point.x, &this->point.y);
-        return res == 2;
+        if (strncmp(str.c_str(), "0x", 2) == 0) {
+            this->point.x = 0;
+            int res = sscanf(str.c_str()+2, "%lf", &this->point.y);
+            return res == 1;
+        } else {
+            int res = sscanf(str.c_str(), "%lf%*1[,x]%lf", &this->point.x, &this->point.y);
+            return res == 2;
+        }
     };
 };
 
@@ -286,15 +292,24 @@ class ConfigOptionPoints : public ConfigOption, public ConfigOptionVector<Pointf
     };
     
     bool deserialize(std::string str) {
-        this->values.clear();
+        std::vector<Pointf> values;
         std::istringstream is(str);
         std::string point_str;
         while (std::getline(is, point_str, ',')) {
             Pointf point;
-            int res = sscanf(point_str.c_str(), "%lfx%lf", &point.x, &point.y);
-            if (res != 2) return false;
-            this->values.push_back(point);
+            if (strncmp(point_str.c_str(), "0x", 2) == 0) {
+                // if string starts with "0x", only apply sscanf() to the second coordinate
+                // otherwise it would parse the string as a hex number
+                point.x = 0;
+                int res = sscanf(point_str.c_str()+2, "%lf", &point.y);
+                if (res != 1) return false;
+            } else {
+                int res = sscanf(point_str.c_str(), "%lfx%lf", &point.x, &point.y);
+                if (res != 2) return false;
+            }
+            values.push_back(point);
         }
+        this->values = values;
         return true;
     };
 };
diff --git a/xs/t/15_config.t b/xs/t/15_config.t
index c281e2225..b3e16d387 100644
--- a/xs/t/15_config.t
+++ b/xs/t/15_config.t
@@ -4,7 +4,7 @@ use strict;
 use warnings;
 
 use Slic3r::XS;
-use Test::More tests => 94;
+use Test::More tests => 95;
 
 foreach my $config (Slic3r::Config->new, Slic3r::Config::Full->new) {
     $config->set('layer_height', 0.3);
@@ -144,4 +144,13 @@ foreach my $config (Slic3r::Config->new, Slic3r::Config::Full->new) {
     }
 }
 
+{
+    my $config = Slic3r::Config->new;
+    # the pair [0,0] is part of the test, since it checks whether the 0x0 serialized value is correctly parsed
+    $config->set('extruder_offset', [ [0,0], [20,0], [0,20] ]);
+    my $config2 = Slic3r::Config->new;
+    $config2->apply($config);
+    is_deeply $config->get('extruder_offset'), $config2->get('extruder_offset'), 'apply dynamic over dynamic';
+}
+
 __END__