diff --git a/src/decimal.h b/src/decimal.h
index 52d0a0a8..4893bc94 100644
--- a/src/decimal.h
+++ b/src/decimal.h
@@ -29,7 +29,7 @@
 /// ReactPhysiscs3D namespace
 namespace reactphysics3d {
 
-#if defined(DOUBLE_PRECISION_ENABLED)   // If we are compiling for double precision
+#if defined(IS_DOUBLE_PRECISION_ENABLED)   // If we are compiling for double precision
     typedef double decimal;
 #else                                   // If we are compiling for single precision
     typedef float decimal;