diff --git a/src/pertpy/tools/_differential_gene_expression/_edger.py b/src/pertpy/tools/_differential_gene_expression/_edger.py
index 88b3b04b..a682ca16 100644
--- a/src/pertpy/tools/_differential_gene_expression/_edger.py
+++ b/src/pertpy/tools/_differential_gene_expression/_edger.py
@@ -108,6 +108,7 @@ def _test_single_contrast(self, contrast: Sequence[float], **kwargs) -> pd.DataF
         with localconverter(get_conversion() + numpy2ri.converter) as cv:
             contrast_vec_r = cv.py2rpy(np.asarray(contrast))
         ro.globalenv["contrast_vec"] = contrast_vec_r
+        ro.globalenv["fit"] = self.fit        
 
         # Test contrast with R
         ro.r(