diff --git a/goal_src/jak3/engine/camera/cam-interface-h.gc b/goal_src/jak3/engine/camera/cam-interface-h.gc
index 43ec2353e31..17f1d0f16d1 100644
--- a/goal_src/jak3/engine/camera/cam-interface-h.gc
+++ b/goal_src/jak3/engine/camera/cam-interface-h.gc
@@ -5,6 +5,8 @@
 ;; name in dgo: cam-interface-h
 ;; dgos: GAME
 
+(define-extern math-camera-matrix (function matrix))
+
 ;; DECOMP BEGINS
 
 (define-perm *camera-init-mat* matrix #f)
diff --git a/goal_src/jak3/engine/gfx/sprite/particles/sparticle-launcher-h.gc b/goal_src/jak3/engine/gfx/sprite/particles/sparticle-launcher-h.gc
index 72acf8b0db8..f3a61ddacbb 100644
--- a/goal_src/jak3/engine/gfx/sprite/particles/sparticle-launcher-h.gc
+++ b/goal_src/jak3/engine/gfx/sprite/particles/sparticle-launcher-h.gc
@@ -5,6 +5,33 @@
 ;; name in dgo: sparticle-launcher-h
 ;; dgos: GAME
 
+(declare-type sprite-vec-data-3d structure)
+(declare-type sparticle-cpuinfo structure)
+(declare-type sparticle-system structure)
+
+(defenum sp-field-id
+  :type uint16
+  )
+
+(defenum sp-flag
+  :type uint16
+  )
+
+(defenum sp-group-item-flag
+  :bitfield #t
+  :type uint16
+  )
+
+(defenum sp-launch-state-flags
+  :bitfield #t
+  :type uint16
+  )
+
+(defenum sp-group-flag
+  :bitfield #t
+  :type uint16
+  )
+
 ;; DECOMP BEGINS
 
 (deftype sparticle-birthinfo (structure)