diff --git a/sci-visualization/paraview/paraview-5.11.1.ebuild b/sci-visualization/paraview/paraview-5.11.1.ebuild
index 65d00b57a5b06..5816780dbe501 100644
--- a/sci-visualization/paraview/paraview-5.11.1.ebuild
+++ b/sci-visualization/paraview/paraview-5.11.1.ebuild
@@ -135,8 +135,10 @@ src_configure() {
 	# Needed to compile bundled VTK in ParaView 5.11.1 with gcc 12
 	# see also, bug #863299
 	filter-lto
-	append-cflags $(test-flags-CC -fno-strict-aliasing -Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
-	append-cxxflags $(test-flags-CXX -fno-strict-aliasing -Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
+	append-cflags $(test-flags-CC -fno-strict-aliasing \
+		-Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
+	append-cxxflags $(test-flags-CXX -fno-strict-aliasing \
+		-Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
 
 	# Make sure qmlplugindump is in path:
 	export PATH="$(qt5_get_bindir):${PATH}"
diff --git a/sci-visualization/paraview/paraview-5.12.0_rc1.ebuild b/sci-visualization/paraview/paraview-5.12.0_rc1.ebuild
index 65d00b57a5b06..5816780dbe501 100644
--- a/sci-visualization/paraview/paraview-5.12.0_rc1.ebuild
+++ b/sci-visualization/paraview/paraview-5.12.0_rc1.ebuild
@@ -135,8 +135,10 @@ src_configure() {
 	# Needed to compile bundled VTK in ParaView 5.11.1 with gcc 12
 	# see also, bug #863299
 	filter-lto
-	append-cflags $(test-flags-CC -fno-strict-aliasing -Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
-	append-cxxflags $(test-flags-CXX -fno-strict-aliasing -Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
+	append-cflags $(test-flags-CC -fno-strict-aliasing \
+		-Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
+	append-cxxflags $(test-flags-CXX -fno-strict-aliasing \
+		-Wno-error=incompatible-function-pointer-types -Wno-error=int-conversion)
 
 	# Make sure qmlplugindump is in path:
 	export PATH="$(qt5_get_bindir):${PATH}"