diff --git a/examples/parameterized_custom_source/parameterized_source_ring.cpp b/examples/parameterized_custom_source/parameterized_source_ring.cpp
index bd7bb1f6f..51218e1b3 100644
--- a/examples/parameterized_custom_source/parameterized_source_ring.cpp
+++ b/examples/parameterized_custom_source/parameterized_source_ring.cpp
@@ -62,6 +62,6 @@ class ParameterizedSource : public openmc::CustomSource {
 // A function to create a pointer to an instance of this class when generated
 // via a plugin call using dlopen/dlsym.
 // You must have external C linkage here otherwise dlopen will not find the file
-extern "C" ParameterizedSource* create(const char* parameters) {
+extern "C" ParameterizedSource* openmc_create_source(const char* parameters) {
   return ParameterizedSource::from_string(parameters);
 }
diff --git a/src/source.cpp b/src/source.cpp
index 4ddd3eb2a..673ee8804 100644
--- a/src/source.cpp
+++ b/src/source.cpp
@@ -380,7 +380,7 @@ void load_custom_source_library()
     custom_source_function = reinterpret_cast<sample_t>(dlsym(custom_source_library, "sample_source"));
   } else {
     // get the function to create the CustomSource from the library
-    create_custom_source_t* create_custom_source = (create_custom_source_t*) dlsym(custom_source_library, "create");
+    create_custom_source_t* create_custom_source = (create_custom_source_t*) dlsym(custom_source_library, "openmc_create_source");
 
     // create a pointer to an instance of the CustomSource
     custom_source = create_custom_source(custom_source_parameters.c_str());
diff --git a/tests/regression_tests/source_parameterized_dlopen/parameterized_source_sampling.cpp b/tests/regression_tests/source_parameterized_dlopen/parameterized_source_sampling.cpp
index 3eda071e8..9fcb841d0 100644
--- a/tests/regression_tests/source_parameterized_dlopen/parameterized_source_sampling.cpp
+++ b/tests/regression_tests/source_parameterized_dlopen/parameterized_source_sampling.cpp
@@ -55,6 +55,6 @@ class ParameterizedSource : public openmc::CustomSource {
 
 // you must have external C linkage here otherwise
 // dlopen will not find the file
-extern "C" ParameterizedSource* create(const char* parameters) {
+extern "C" ParameterizedSource* openmc_create_source(const char* parameters) {
   return ParameterizedSource::from_string(parameters);
 }