diff --git a/doomsday/sdk/libcore/include/de/libcore.h b/doomsday/sdk/libcore/include/de/libcore.h
index fcf42f81a9..0ec6710869 100644
--- a/doomsday/sdk/libcore/include/de/libcore.h
+++ b/doomsday/sdk/libcore/include/de/libcore.h
@@ -386,8 +386,8 @@ class PrivateAutoPtr
     PrivateAutoPtr(ImplType *p) : ptr(p) {}
     ~PrivateAutoPtr() { reset(); }
 
-    ImplType &operator * () const { return *ptr; }
-    ImplType *operator -> () const { return ptr; }
+    inline ImplType &operator * () const { return *ptr; }
+    inline ImplType *operator -> () const { return ptr; }
     void reset(ImplType *p = 0) {
         IPrivate *ip = reinterpret_cast<IPrivate *>(ptr);
         if (ip)
@@ -397,13 +397,13 @@ class PrivateAutoPtr
         }
         ptr = p;
     }
-    ImplType *get() const {
+    inline ImplType *get() const {
         return ptr;
     }
-    ImplType const *getConst() const {
+    inline ImplType const *getConst() const {
         return ptr;
     }
-    operator ImplType *() const {
+    inline operator ImplType *() const {
         return ptr;
     }
     ImplType *release() {
@@ -414,7 +414,7 @@ class PrivateAutoPtr
     void swap(PrivateAutoPtr &other) {
         std::swap(ptr, other.ptr);
     }
-    bool isNull() const {
+    inline bool isNull() const {
         return !ptr;
     }
 #ifdef DENG2_DEBUG