diff --git a/source/blender/blenlib/BLI_math_base.hh b/source/blender/blenlib/BLI_math_base.hh
index 034c6968c94..3057e30dc03 100644
--- a/source/blender/blenlib/BLI_math_base.hh
+++ b/source/blender/blenlib/BLI_math_base.hh
@@ -14,19 +14,9 @@
 #include "BLI_math_base_safe.h"
 #include "BLI_utildefines.h"
 
-#ifdef WITH_GMP
-#  include "BLI_math_mpq.hh"
-#endif
-
 namespace blender::math {
 
-template<typename T>
-inline constexpr bool is_math_float_type = (std::is_floating_point_v<T>
-#ifdef WITH_GMP
-                                            || std::is_same_v<T, mpq_class>
-#endif
-);
-
+template<typename T> inline constexpr bool is_math_float_type = std::is_floating_point_v<T>;
 template<typename T> inline constexpr bool is_math_integral_type = std::is_integral_v<T>;
 
 template<typename T> inline bool is_zero(const T &a)
diff --git a/source/blender/blenlib/BLI_math_mpq.hh b/source/blender/blenlib/BLI_math_mpq.hh
index 7b43c90da84..02c92705323 100644
--- a/source/blender/blenlib/BLI_math_mpq.hh
+++ b/source/blender/blenlib/BLI_math_mpq.hh
@@ -19,4 +19,10 @@
  */
 #  include "gmpxx.h"
 
+#  include "BLI_math_base.hh"
+
+namespace blender::math {
+template<> inline constexpr bool is_math_float_type<mpq_class> = true;
+}
+
 #endif /* WITH_GMP */
diff --git a/source/blender/blenlib/BLI_math_vec_types.hh b/source/blender/blenlib/BLI_math_vec_types.hh
index e36bbedee32..7f20881dfa3 100644
--- a/source/blender/blenlib/BLI_math_vec_types.hh
+++ b/source/blender/blenlib/BLI_math_vec_types.hh
@@ -14,10 +14,6 @@
 
 #include "BLI_utildefines.h"
 
-#ifdef WITH_GMP
-#  include "BLI_math_mpq.hh"
-#endif
-
 namespace blender {
 
 /* clang-format off */