diff --git a/CMakeLists.txt b/CMakeLists.txt
index 702d0c433..c1bcefd3f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -999,7 +999,6 @@ if(SDL_LIBC)
     endforeach()
     set(HAVE_ALLOCA 1)
     check_symbol_exists(M_PI math.h HAVE_M_PI)
-    target_compile_definitions(sdl-build-options INTERFACE "-D_USE_MATH_DEFINES") # needed for M_PI
     set(STDC_HEADERS 1)
   else()
     set(HAVE_LIBC TRUE)
diff --git a/include/SDL_stdinc.h b/include/SDL_stdinc.h
index 70dba7db6..401515211 100644
--- a/include/SDL_stdinc.h
+++ b/include/SDL_stdinc.h
@@ -80,7 +80,7 @@
 # include <ctype.h>
 #endif
 #ifdef HAVE_MATH_H
-# if defined(_MSC_VER)
+# if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES)
 /* Defining _USE_MATH_DEFINES is required to get M_PI to be defined on
    Visual Studio.  See http://msdn.microsoft.com/en-us/library/4hwaceh6.aspx
    for more information.