diff --git a/share/spack/qa/run-doc-tests b/share/spack/qa/run-doc-tests
index 0b23bd9d3d82306a8394a20fb1bdaa42e4ca7596..96b76a216eb16bcdd1c41bc421c4e26a4e682ef8 100755
--- a/share/spack/qa/run-doc-tests
+++ b/share/spack/qa/run-doc-tests
@@ -28,6 +28,9 @@ deps=(
 # Check for dependencies
 "$QA_DIR/check_dependencies" "${deps[@]}" || exit 1
 
+# Add Spack to the PATH.
+export PATH="$SPACK_ROOT/bin:$PATH"
+
 # Move to documentation directory
 # Allows script to be run from anywhere
 cd "$DOC_DIR"