diff --git a/Makefile b/Makefile
index 3381a8ca..a51e476f 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,7 @@ endif
 bin/functest_$(subst /,_,$(SCHEME)): test/$(dir $(SCHEME))functest.c $(wildcard $(SCHEME)/clean/*.c) $(wildcard $(SCHEME)/clean/*.h) | require_scheme
 	mkdir -p bin
 	$(CC) $(CFLAGS) \
+		-DPQCLEAN_NAMESPACE=$(shell echo PQCLEAN_$(subst -,,$(notdir $(SCHEME))) | tr a-z A-Z) \
 		-iquote "./common/" \
 		-iquote "$(SCHEME)/clean/" \
 		-o bin/functest_$(subst /,_,$(SCHEME)) \
@@ -49,6 +50,7 @@ sanitizer: bin/sanitizer_$(subst /,_,$(SCHEME))
 bin/testvectors_$(subst /,_,$(SCHEME)): test/$(dir $(SCHEME))testvectors.c $(wildcard $(SCHEME)/clean/*.c) $(wildcard $(SCHEME)/clean/*.h) | require_scheme
 	mkdir -p bin
 	$(CC) $(CFLAGS) \
+		-DPQCLEAN_NAMESPACE=$(shell echo PQCLEAN_$(subst -,,$(notdir $(SCHEME))) | tr a-z A-Z) \
 		-iquote "./common/" \
 		-iquote "$(SCHEME)/clean/" \
 		-o bin/testvectors_$(subst /,_,$(SCHEME)) \
@@ -62,6 +64,7 @@ testvectors: bin/testvectors_$(subst /,_,$(SCHEME))
 bin/shared_$(subst /,_,$(SCHEME))_clean.so: $(wildcard $(SCHEME)/clean/*.c) | require_scheme
 	mkdir -p bin
 	gcc $(CFLAGS) \
+		-DPQCLEAN_NAMESPACE=$(shell echo PQCLEAN_$(subst -,,$(notdir $(SCHEME))) | tr a-z A-Z) \
 		-shared \
 		-fPIC \
 		-iquote "./common/" \
diff --git a/test/check_symbol_namespace.py b/test/check_symbol_namespace.py
index cec4143f..a28eb874 100644
--- a/test/check_symbol_namespace.py
+++ b/test/check_symbol_namespace.py
@@ -13,7 +13,7 @@ if len(sys.argv) != 2:
 SCHEME = sys.argv[1]
 SCHEMEFULL = SCHEME.replace('/', '_')  # e.g. crypto_kem_kyber768
 SCHEMESHORT = SCHEME.split('/')[1].upper()
-namespace = f"PQCLEAN_{SCHEMESHORT}_"
+namespace = f"PQCLEAN_{SCHEMESHORT}_".replace('-', '')
 
 # TODO can we do this using object files instead, to preserve file origin?
 sharedlib = f"bin/shared_{SCHEMEFULL}_clean.so"
diff --git a/test/crypto_kem/functest.c b/test/crypto_kem/functest.c
index 9e83ee20..f4f970c5 100644
--- a/test/crypto_kem/functest.c
+++ b/test/crypto_kem/functest.c
@@ -20,6 +20,15 @@ static int check_canary(const unsigned char *d) {
     return 0;
 }
 
+// https://stackoverflow.com/a/1489985/1711232
+#define PASTER(x, y) x##_##y
+#define EVALUATOR(x, y) PASTER(x, y)
+#define NAMESPACE(fun) EVALUATOR(PQCLEAN_NAMESPACE, fun)
+
+#define crypto_kem_keypair NAMESPACE(crypto_kem_keypair)
+#define crypto_kem_enc NAMESPACE(crypto_kem_enc)
+#define crypto_kem_dec NAMESPACE(crypto_kem_dec)
+
 static int test_keys(void) {
     unsigned char key_a[CRYPTO_BYTES + 16], key_b[CRYPTO_BYTES + 16];
     unsigned char pk[CRYPTO_PUBLICKEYBYTES + 16];
diff --git a/test/crypto_kem/testvectors.c b/test/crypto_kem/testvectors.c
index 16b6973f..bad4a88b 100644
--- a/test/crypto_kem/testvectors.c
+++ b/test/crypto_kem/testvectors.c
@@ -13,6 +13,15 @@ static void printbytes(const unsigned char *x, unsigned long long xlen) {
     printf("\n");
 }
 
+// https://stackoverflow.com/a/1489985/1711232
+#define PASTER(x, y) x##_##y
+#define EVALUATOR(x, y) PASTER(x, y)
+#define NAMESPACE(fun) EVALUATOR(PQCLEAN_NAMESPACE, fun)
+
+#define crypto_kem_keypair NAMESPACE(crypto_kem_keypair)
+#define crypto_kem_enc NAMESPACE(crypto_kem_enc)
+#define crypto_kem_dec NAMESPACE(crypto_kem_dec)
+
 int main(void) {
     unsigned char key_a[CRYPTO_BYTES], key_b[CRYPTO_BYTES];
     unsigned char pk[CRYPTO_PUBLICKEYBYTES];
diff --git a/test/crypto_sign/functest.c b/test/crypto_sign/functest.c
index 7a5a0f57..60158e64 100644
--- a/test/crypto_sign/functest.c
+++ b/test/crypto_sign/functest.c
@@ -20,6 +20,16 @@ static int check_canary(const unsigned char *d) {
 
     return 0;
 }
+
+// https://stackoverflow.com/a/1489985/1711232
+#define PASTER(x, y) x##_##y
+#define EVALUATOR(x, y) PASTER(x, y)
+#define NAMESPACE(fun) EVALUATOR(PQCLEAN_NAMESPACE, fun)
+
+#define crypto_sign_keypair NAMESPACE(crypto_sign_keypair)
+#define crypto_sign NAMESPACE(crypto_sign)
+#define crypto_sign_open NAMESPACE(crypto_sign_open)
+
 static int test_sign(void) {
     unsigned char pk[CRYPTO_PUBLICKEYBYTES + 16];
     unsigned char sk[CRYPTO_SECRETKEYBYTES + 16];
diff --git a/test/crypto_sign/testvectors.c b/test/crypto_sign/testvectors.c
index 156352a8..39240442 100644
--- a/test/crypto_sign/testvectors.c
+++ b/test/crypto_sign/testvectors.c
@@ -14,6 +14,15 @@ static void printbytes(const unsigned char *x, unsigned long long xlen) {
     printf("\n");
 }
 
+// https://stackoverflow.com/a/1489985/1711232
+#define PASTER(x, y) x##_##y
+#define EVALUATOR(x, y) PASTER(x, y)
+#define NAMESPACE(fun) EVALUATOR(PQCLEAN_NAMESPACE, fun)
+
+#define crypto_sign_keypair NAMESPACE(crypto_sign_keypair)
+#define crypto_sign NAMESPACE(crypto_sign)
+#define crypto_sign_open NAMESPACE(crypto_sign_open)
+
 int main(void) {
     unsigned char sk[CRYPTO_SECRETKEYBYTES];
     unsigned char pk[CRYPTO_PUBLICKEYBYTES];