diff --git a/sci-physics/root/root-6.24.06-r2.ebuild b/sci-physics/root/root-6.24.06-r2.ebuild
index baa622feb887e..d0010c0eb95c5 100644
--- a/sci-physics/root/root-6.24.06-r2.ebuild
+++ b/sci-physics/root/root-6.24.06-r2.ebuild
@@ -152,9 +152,9 @@ src_prepare() {
 
 src_configure() {
 	local mycmakeargs=(
-		-DCMAKE_C_COMPILER=$(tc-getCC)
-		-DCMAKE_CXX_COMPILER=$(tc-getCXX)
-		-DCMAKE_CUDA_HOST_COMPILER=$(tc-getCXX)
+		-DCMAKE_C_COMPILER="$(tc-getCC)"
+		-DCMAKE_CXX_COMPILER="$(tc-getCXX)"
+		-DCMAKE_CUDA_HOST_COMPILER="$(tc-getCXX)"
 		-DCMAKE_C_FLAGS="${CFLAGS}"
 		-DCMAKE_CXX_FLAGS="${CXXFLAGS}"
 		-DCMAKE_CXX_STANDARD=$((usev c++11 || usev c++14 || usev c++17) | cut -c4-)
diff --git a/sci-physics/root/root-6.26.00.ebuild b/sci-physics/root/root-6.26.00.ebuild
index 43196c9075ded..fc9568849f884 100644
--- a/sci-physics/root/root-6.26.00.ebuild
+++ b/sci-physics/root/root-6.26.00.ebuild
@@ -152,9 +152,9 @@ src_prepare() {
 
 src_configure() {
 	local mycmakeargs=(
-		-DCMAKE_C_COMPILER=$(tc-getCC)
-		-DCMAKE_CXX_COMPILER=$(tc-getCXX)
-		-DCMAKE_CUDA_HOST_COMPILER=$(tc-getCXX)
+		-DCMAKE_C_COMPILER="$(tc-getCC)"
+		-DCMAKE_CXX_COMPILER="$(tc-getCXX)"
+		-DCMAKE_CUDA_HOST_COMPILER="$(tc-getCXX)"
 		-DCMAKE_C_FLAGS="${CFLAGS}"
 		-DCMAKE_CXX_FLAGS="${CXXFLAGS}"
 		-DCMAKE_CXX_STANDARD=$((usev c++14 || usev c++17) | cut -c4-)
diff --git a/sci-physics/root/root-6.26.9999.ebuild b/sci-physics/root/root-6.26.9999.ebuild
index 2dda688768c6e..9089f78b2f9aa 100644
--- a/sci-physics/root/root-6.26.9999.ebuild
+++ b/sci-physics/root/root-6.26.9999.ebuild
@@ -163,9 +163,9 @@ src_prepare() {
 
 src_configure() {
 	local mycmakeargs=(
-		-DCMAKE_C_COMPILER=$(tc-getCC)
-		-DCMAKE_CXX_COMPILER=$(tc-getCXX)
-		-DCMAKE_CUDA_HOST_COMPILER=$(tc-getCXX)
+		-DCMAKE_C_COMPILER="$(tc-getCC)"
+		-DCMAKE_CXX_COMPILER="$(tc-getCXX)"
+		-DCMAKE_CUDA_HOST_COMPILER="$(tc-getCXX)"
 		-DCMAKE_C_FLAGS="${CFLAGS}"
 		-DCMAKE_CXX_FLAGS="${CXXFLAGS}"
 		-DCMAKE_CXX_STANDARD=$((usev c++14 || usev c++17) | cut -c4-)
diff --git a/sci-physics/root/root-9999.ebuild b/sci-physics/root/root-9999.ebuild
index 17abcfdfccb2c..5b33a45e4b125 100644
--- a/sci-physics/root/root-9999.ebuild
+++ b/sci-physics/root/root-9999.ebuild
@@ -163,9 +163,9 @@ src_prepare() {
 
 src_configure() {
 	local mycmakeargs=(
-		-DCMAKE_C_COMPILER=$(tc-getCC)
-		-DCMAKE_CXX_COMPILER=$(tc-getCXX)
-		-DCMAKE_CUDA_HOST_COMPILER=$(tc-getCXX)
+		-DCMAKE_C_COMPILER="$(tc-getCC)"
+		-DCMAKE_CXX_COMPILER="$(tc-getCXX)"
+		-DCMAKE_CUDA_HOST_COMPILER="$(tc-getCXX)"
 		-DCMAKE_C_FLAGS="${CFLAGS}"
 		-DCMAKE_CXX_FLAGS="${CXXFLAGS}"
 		-DCMAKE_CXX_STANDARD=$((usev c++11 || usev c++14 || usev c++17) | cut -c4-)