diff --git a/src/libslic3r/Emboss.cpp b/src/libslic3r/Emboss.cpp
index 34d9a93590..38c035806c 100644
--- a/src/libslic3r/Emboss.cpp
+++ b/src/libslic3r/Emboss.cpp
@@ -990,6 +990,7 @@ EmbossStyles Emboss::get_font_list_by_enumeration() {
     std::vector<std::wstring> font_names;
     EnumFontFamilies(hDC, (LPCTSTR) NULL, EnumFamCallBack,
                      (LPARAM) &font_names);
+    ReleaseDC(NULL, hDC);
 
     EmbossStyles font_list;
     for (const std::wstring &font_name : font_names) {
diff --git a/src/slic3r/GUI/GUI_Utils.cpp b/src/slic3r/GUI/GUI_Utils.cpp
index 10dd29c9c1..5c55e341c9 100644
--- a/src/slic3r/GUI/GUI_Utils.cpp
+++ b/src/slic3r/GUI/GUI_Utils.cpp
@@ -247,7 +247,9 @@ int get_dpi_for_window(const wxWindow *window)
 
         const HDC hdc = GetDC(hwnd);
         if (hdc == NULL) { return DPI_DEFAULT; }
-        return GetDeviceCaps(hdc, LOGPIXELSX);
+        const int dpi = GetDeviceCaps(hdc, LOGPIXELSX);
+        ReleaseDC(hwnd, hdc); // GetDC's handle must be released, unlike GetWindowDC's
+        return dpi;
     }
 #elif defined __linux__
     // TODO