diff --git a/build/autotools/m4/lol-sdl.m4 b/build/autotools/m4/lol-sdl.m4
index 13d98915..0db6914f 100644
--- a/build/autotools/m4/lol-sdl.m4
+++ b/build/autotools/m4/lol-sdl.m4
@@ -37,7 +37,6 @@ dnl    LOL_USE_SDL         -- whether SDL v2 was found
 dnl    LOL_USE_SDL_IMAGE   -- whether SDL_image was found
 dnl    LOL_USE_SDL_MIXER   -- whether SDL_mixer was found
 dnl    HAVE_SDL_H      -- whether to include <SDL.h>
-dnl    HAVE_SDL_SDL_H  -- whether to include <SDL/SDL.h>
 dnl    HAVE_SDL2_SDL_H -- whether to include <SDL2/SDL.h>
 dnl  Generated automake conditionals:
 dnl    LOL_USE_SDL         -- whether SDL v2 was found
@@ -75,12 +74,12 @@ if test "x${ac_cv_my_have_sdl}" = xno; then
   save_LIBS="${LIBS}"
   CPPFLAGS="${CPPFLAGS} ${SDL_CFLAGS}"
   LIBS="${LIBS} ${SDL_LIBS}"
-  AC_CHECK_HEADERS(SDL.h SDL/SDL.h SDL2/SDL.h,
+  AC_CHECK_HEADERS(SDL.h SDL2/SDL.h,
    [ac_cv_my_have_sdl="yes"])
   if test "x${ac_cv_my_have_sdl}" != xno; then
-    AC_CHECK_HEADERS(SDL_mixer.h SDL/SDL_mixer.h SDL2/SDL_mixer.h,
+    AC_CHECK_HEADERS(SDL_mixer.h SDL2/SDL_mixer.h,
      [ac_cv_my_have_sdl_mixer="yes"])
-    AC_CHECK_HEADERS(SDL_image.h SDL/SDL_image.h SDL2/SDL_image.h,
+    AC_CHECK_HEADERS(SDL_image.h SDL2/SDL_image.h,
      [ac_cv_my_have_sdl_image="yes"])
     AC_CHECK_LIB(SDL2, main,
      [SDL_LIBS="${SDL_LIBS} -lSDL2"],
diff --git a/src/audio/audio.cpp b/src/audio/audio.cpp
index 1e1ce4db..dd209812 100644
--- a/src/audio/audio.cpp
+++ b/src/audio/audio.cpp
@@ -13,13 +13,10 @@
 #include <lol/engine-internal.h>
 
 #if LOL_USE_SDL_MIXER
-#   if HAVE_SDL_SDL_H
-#       include <SDL/SDL.h>
-#       include <SDL/SDL_mixer.h>
-#   elif HAVE_SDL2_SDL_H
+#   if HAVE_SDL2_SDL_H
 #       include <SDL2/SDL.h>
 #       include <SDL2/SDL_mixer.h>
-#   else
+#   elif HAVE_SDL_H
 #       include <SDL.h>
 #       include <SDL_mixer.h>
 #   endif
diff --git a/src/audio/sample.cpp b/src/audio/sample.cpp
index 2b42ac28..2c23a905 100644
--- a/src/audio/sample.cpp
+++ b/src/audio/sample.cpp
@@ -17,13 +17,10 @@
 #include <cstring>
 
 #if LOL_USE_SDL_MIXER
-#   if HAVE_SDL_SDL_H
-#       include <SDL/SDL.h>
-#       include <SDL/SDL_mixer.h>
-#   elif HAVE_SDL2_SDL_H
+#   if HAVE_SDL2_SDL_H
 #       include <SDL2/SDL.h>
 #       include <SDL2/SDL_mixer.h>
-#   else
+#   elif HAVE_SDL_H
 #       include <SDL.h>
 #       include <SDL_mixer.h>
 #   endif
diff --git a/src/eglapp.cpp b/src/eglapp.cpp
index 74c8a587..edff7f1f 100644
--- a/src/eglapp.cpp
+++ b/src/eglapp.cpp
@@ -29,9 +29,7 @@
 #if LOL_USE_SDL
 #   if HAVE_SDL2_SDL_H
 #      include <SDL2/SDL.h>
-#   elif HAVE_SDL_SDL_H
-#      include <SDL/SDL.h>
-#   else
+#   elif HAVE_SDL_H
 #      include <SDL.h>
 #   endif
 #endif
diff --git a/src/image/codec/sdl-image.cpp b/src/image/codec/sdl-image.cpp
index c37b7c69..ef3327aa 100644
--- a/src/image/codec/sdl-image.cpp
+++ b/src/image/codec/sdl-image.cpp
@@ -14,13 +14,10 @@
 
 #if LOL_USE_SDL_IMAGE
 
-#if HAVE_SDL_SDL_H
-#   include <SDL/SDL.h>
-#   include <SDL/SDL_image.h>
-#elif HAVE_SDL2_SDL_H
+#if HAVE_SDL2_SDL_H
 #   include <SDL2/SDL.h>
 #   include <SDL2/SDL_image.h>
-#else
+#elif HAVE_SDL_H
 #   include <SDL.h>
 #   include <SDL_image.h>
 #endif
diff --git a/src/platform/sdl/sdlapp.cpp b/src/platform/sdl/sdlapp.cpp
index 94fe34cc..204dbb2a 100644
--- a/src/platform/sdl/sdlapp.cpp
+++ b/src/platform/sdl/sdlapp.cpp
@@ -15,9 +15,7 @@
 #if LOL_USE_SDL
 #   if HAVE_SDL2_SDL_H
 #      include <SDL2/SDL.h>
-#   elif HAVE_SDL_SDL_H
-#      include <SDL/SDL.h>
-#   else
+#   elif HAVE_SDL_H
 #      include <SDL.h>
 #   endif
 #endif
diff --git a/src/platform/sdl/sdlinput.cpp b/src/platform/sdl/sdlinput.cpp
index d2efa1e6..afe58b78 100644
--- a/src/platform/sdl/sdlinput.cpp
+++ b/src/platform/sdl/sdlinput.cpp
@@ -15,9 +15,7 @@
 #if LOL_USE_SDL
 #   if HAVE_SDL2_SDL_H
 #      include <SDL2/SDL.h>
-#   elif HAVE_SDL_SDL_H
-#      include <SDL/SDL.h>
-#   else
+#   elif HAVE_SDL_H
 #      include <SDL.h>
 #   endif
 #endif