diff --git a/source/build/include/build.h b/source/build/include/build.h
index f64a14884..69213ffc8 100644
--- a/source/build/include/build.h
+++ b/source/build/include/build.h
@@ -1070,7 +1070,11 @@ void   preparemirror(int32_t dax, int32_t day, fix16_t daang, int16_t dawall,
 void   completemirror(void);
 
 int32_t drawrooms_q16(int32_t daposx, int32_t daposy, int32_t daposz, fix16_t daang, fix16_t dahoriz, int16_t dacursectnum);
-int32_t drawrooms(int32_t daposx, int32_t daposy, int32_t daposz, int16_t daang, int16_t dahoriz, int16_t dacursectnum);
+
+static FORCE_INLINE int32_t drawrooms(int32_t daposx, int32_t daposy, int32_t daposz, int16_t daang, int16_t dahoriz, int16_t dacursectnum)
+{
+    return drawrooms_q16(daposx, daposy, daposz, fix16_from_int(daang), fix16_from_int(dahoriz), dacursectnum);
+}
 
 void   drawmasks(void);
 void   clearview(int32_t dacol);
diff --git a/source/build/src/engine.cpp b/source/build/src/engine.cpp
index 10776bc0c..0a77138ac 100644
--- a/source/build/src/engine.cpp
+++ b/source/build/src/engine.cpp
@@ -7919,13 +7919,6 @@ void set_globalang(fix16_t ang)
 //
 // drawrooms
 //
-
-int32_t drawrooms(int32_t daposx, int32_t daposy, int32_t daposz,
-    int16_t daang, int16_t dahoriz, int16_t dacursectnum)
-{
-    return drawrooms_q16(daposx, daposy, daposz, fix16_from_int(daang), fix16_from_int(dahoriz), dacursectnum);
-}
-
 int32_t drawrooms_q16(int32_t daposx, int32_t daposy, int32_t daposz,
                fix16_t daang, fix16_t dahoriz, int16_t dacursectnum)
 {