diff --git a/kde-apps/kcalc/kcalc-25.08.0.recipe b/kde-apps/kcalc/kcalc-25.08.0.recipe
index 34a13d5ae..ee65f603c 100644
--- a/kde-apps/kcalc/kcalc-25.08.0.recipe
+++ b/kde-apps/kcalc/kcalc-25.08.0.recipe
@@ -71,7 +71,7 @@ REQUIRES="
 BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
 	devel:libgmp$secondaryArchSuffix
-	devel:libmpfr$secondaryArchSuffix
+	devel:libmpfr$secondaryArchSuffix >= 6
 	devel:libmpc$secondaryArchSuffix
 	# KF6
 	extra_cmake_modules$secondaryArchSuffix