diff --git a/modules/math/cblas.cmake b/modules/math/cblas.cmake
index 756614a..47a11c5 100644
--- a/modules/math/cblas.cmake
+++ b/modules/math/cblas.cmake
@@ -33,8 +33,8 @@ if(ENABLE_CBLAS)
         _find_include_dir(cblas.h /usr CBLAS_INCLUDE_DIR)
     endif()
 
-    if(NOT "${CBLAS_LIBRARIES}" STREQUAL "NOTFOUND")
-        if(NOT "${CBLAS_INCLUDE_DIR}" STREQUAL "NOTFOUND")
+    if(NOT "${CBLAS_LIBRARIES}" MATCHES "NOTFOUND")
+        if(NOT "${CBLAS_INCLUDE_DIR}" MATCHES "NOTFOUND")
             set(CBLAS_FOUND TRUE)
         endif()
     endif()
diff --git a/modules/math/lapacke.cmake b/modules/math/lapacke.cmake
index 37be36e..e7dfcad 100644
--- a/modules/math/lapacke.cmake
+++ b/modules/math/lapacke.cmake
@@ -33,8 +33,8 @@ if(ENABLE_LAPACKE)
         _find_include_dir(lapacke.h /usr LAPACKE_INCLUDE_DIR)
 #   endif()
 
-    if(NOT "${LAPACKE_LIBRARIES}" STREQUAL "NOTFOUND")
-        if(NOT "${LAPACKE_INCLUDE_DIR}" STREQUAL "NOTFOUND")
+    if(NOT "${LAPACKE_LIBRARIES}" MATCHES "NOTFOUND")
+        if(NOT "${LAPACKE_INCLUDE_DIR}" MATCHES "NOTFOUND")
             set(LAPACKE_FOUND TRUE)
         endif()
     endif()