diff --git a/src/index_provider_interface.jl b/src/index_provider_interface.jl
index ca80d37a..72caed49 100644
--- a/src/index_provider_interface.jl
+++ b/src/index_provider_interface.jl
@@ -59,7 +59,7 @@ parameter_index(indp, sym) = parameter_index(symbolic_container(indp), sym)
 Check whether the given `sym` is a timeseries parameter in `indp`.
 """
 function is_timeseries_parameter(indp, sym)
-    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) !== indp
+    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) != indp
         is_timeseries_parameter(sc, sym)
     else
         return false
@@ -91,7 +91,7 @@ parameter in `indp`. Defaults to returning `nothing`. Respects the
 [`symbolic_container`](@ref) fallback for `indp` if present.
 """
 function timeseries_parameter_index(indp, sym)
-    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) !== indp
+    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) != indp
         timeseries_parameter_index(symbolic_container(indp), sym)
     else
         return nothing
@@ -111,7 +111,7 @@ By default, this function returns `nothing`, indicating that the index provider
 support generating parameter observed functions.
 """
 function parameter_observed(indp, sym)
-    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) !== indp
+    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) != indp
         return parameter_observed(symbolic_container(indp), sym)
     else
         return nothing
@@ -143,7 +143,7 @@ variable.
 By default, this function returns `Set([ContinuousTimeseries()])`.
 """
 function get_all_timeseries_indexes(indp, sym)
-    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) !== indp
+    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) != indp
         return get_all_timeseries_indexes(symbolic_container(indp), sym)
     else
         return Set([ContinuousTimeseries()])
@@ -240,7 +240,7 @@ Return a dictionary mapping symbols in the index provider to their default value
 This includes parameter symbols. The dictionary must be mutable.
 """
 function default_values(indp)
-    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) !== indp
+    if hasmethod(symbolic_container, Tuple{typeof(indp)}) && (sc = symbolic_container(indp)) != indp
         default_values(symbolic_container(indp))
     else
         Dict()