diff --git a/var/spack/repos/builtin/packages/speexdsp/package.py b/var/spack/repos/builtin/packages/speexdsp/package.py
index ad72d046fc2..362ba8ccbd6 100644
--- a/var/spack/repos/builtin/packages/speexdsp/package.py
+++ b/var/spack/repos/builtin/packages/speexdsp/package.py
@@ -41,17 +41,17 @@ def autoreconf(self, spec, prefix):
 
     def configure_args(self):
         args = []
-
-        if "intel-mkl" in self.spec:
+        if self.spec.satisfies("^[virtuals=fftw-api] intel-oneapi-mkl"):
             # get the blas libs explicitly to avoid scalapack getting returned
             args.extend(
                 [
                     "--with-fft=proprietary-intel-mkl",
-                    "CPPFLAGS={0}".format(self.spec["intel-mkl"].headers.cpp_flags),
-                    "LDFLAGS={0}".format(self.spec["blas"].libs.ld_flags),
+                    f"CPPFLAGS={self.spec['intel-oneapi-mkl'].headers.cpp_flags}",
+                    f"LDFLAGS={self.spec['intel-oneapi-mkl'].libs.ld_flags}",
                 ]
             )
-        elif "fftw" in self.spec:
+
+        elif self.spec.satisfies("^[virtuals=fftw-api] fftw"):
             args.append("--with-fft=gpl-fftw3")
 
         return args