diff --git a/var/spack/repos/builtin/packages/conquest/package.py b/var/spack/repos/builtin/packages/conquest/package.py
index ed4df2829f7..5a1208acc8f 100644
--- a/var/spack/repos/builtin/packages/conquest/package.py
+++ b/var/spack/repos/builtin/packages/conquest/package.py
@@ -75,7 +75,7 @@ def edit(self, spec, prefix):
 
         lapack_ld = self.spec["lapack"].libs.ld_flags
         blas_ld = self.spec["blas"].libs.ld_flags
-        fftw_ld = self.spec["fftw"].libs.ld_flags
+        fftw_ld = self.spec["fftw-api"].libs.ld_flags
         libxc_ld = self.spec["libxc"].libs.ld_flags
 
         # Starting from 1.3 there's automated logic in the Makefile that picks